import changes from `dev' branch of rmottola/Arctic-Fox:

- Bug 1246851 (Part 1) - Add a new SurfacePipe API for writing to image surfaces in a safe and composable manner. r=njn (2e3353a6a7)
- Bug 1246851 (Part 2) - Add SurfaceFilter implementations for basic surface output operations. r=njn (fa30948a3f)
- Bug 1246851 (Part 3) - Add a factory for constructing SurfacePipes. r=njn (7a746d3ec8)
- Bug 1191347 - Explicitly release surfaces on the main thread in TestDecodeToSurface. r=me (fa1a68dc9a)
- Bug 1246851 (Part 4) - Add a test suite for SurfacePipes and SurfaceFilters. r=njn (380dc94c08)
- Bug 1247152 (Part 1) - Use SurfacePipe in the GIF decoder. r=njn (8b3d76f017)
- Bug 1247152 (Part 2) - Remove even more code from the GIF decoder. r=edwin (80c8cc5e1c)
- side effects Bug 1247152 (Part 1) (5b6cbf0ad5)
- Bug 1237232 - Properly check the result of Vector append() calls in security/. r=keeler (b06dce061f)
- Bug 1235308 - Fix -Wimplicit-fallthrough warnings in security/. r=keeler (ac5c3bf540)
- Bug 1235188 - Fix -Wformat warnings in security/certverifier/. r=keeler (25ee7ee77c)
- Bug 1004149 - Remove some dead code. r=keeler (59fedcb6a6)
- Bug 1004149 - Return mozilla::pkix::Result values in nsNSSHttpInterface functions. r=keeler (76933c7d94)
- Bug 1187173 - Disable warning C4623 on security/certverifier. r=briansmith (c1353b0577)
- Bug 1256484 - Disable C4456 and C4458 to unblock compilation on VS2015; r=keeler (b51ac368ba)
- Bug 1251009 - Remove unused nsICertificateDialogs.notifyCACertExists() method. r=keeler, r=mfinkle (9ca9aee3d0)
- Bug 1249224 - window.open() should open a new window in the same container, r=bz (c57c76ec2f)
- Bug 1245451 - add default nullptr value to mChrome. r=bsmedberg (3236ea34df)
- Bug 1255849. Add some documentation for AutoJSAPI instances that seem to be used just for cxpushing. r=bholley (60a81652de)
- Bug 1189554 - Make Saved Passwords dialog resizable on Windows again. r=smaug (a367796251)
- Bug 1252974 - Convert screen's available dimensions to CSS-pixel units in nsWindowWatcher. r=emk (5524055ab0)
- Bug 1233328 - Part 1: Ignore SHA-1 pins in PublicKeyPinningService.cpp. r=keeler (e5fe732a4b)
- Bug 1233328 - Part 2: Use SHA-256 StaticFingerprints directly instead창 of StaticPinset since the SHA-1 StaticFingerprints entry will always be null. r=keeler (50f88c76da)
- Bug 1256089 - Fix Mutex support for tier-3 platforms; r=froydnj (76ab483843)
- Bug 1257019 - Add move construction to js::Mutex<T>. r=terrence (383ad474ba)
- No bug, Automated HPKP preload list update from host bld-linux64-spot-309 - a=hpkp-update (0a6d3b9c40)
- No bug, Automated HPKP preload list update from host bld-linux64-spot-223 - a=hpkp-update (7b3dbac6f8)
- Bug 1255655 - Const-ify kPinset_* arrays. r=cykesiopka. (ddbaad40a0)
- No bug, Automated HPKP preload list update from host bld-linux64-spot-543 - a=hpkp-update (f5c37e366a)
- bug 1233853 - make nsSyncJPAKE aware of NSS shutdown r=jcj (9f74b5a46f)
- Bug 1215734 - Expand GeckoMediaPlugin sandbox policy for Clang 3.7 ASan. r=kang (a96e0429e5)
- part Bug 1154738 - Fixed WMFUtils.cpp compilation on mingw (9ba8bd1481)
- Bug 1256498. Explicitly convert to float. r=bas (ce97ef100e)
- Bug 1223736 - Part 1: Set correct effective transform on mask layers. r=thinker (a87514ac4f)
- Bug 1249813 - part 1 - revise nsShmImage to allow draw targets anywhere inside its bounds. r=jrmuizel (cba4cdf8c9)
- Bug 1249813 - part 2 - make Cairo mark a surface as clear if clip covers entire surface. r=jrmuizel (45ccfcfc15)
- Bug 1249813 - part 3 - tell the compositor if the root layer has opaque content so it can skip clears. r=mattwoodrow (2abaa0cf8b)
- Bug 1255303 - Use SurfaceFormat::B8G8R8X8 as back buffer if possible r=jrmuizel (5f81a83123)
- Bug 1253860 - Don't update the scrollbar unless we're actually painting. r=mstange (d3a2482408)
- Bug 1253860 - Add a flag on scroll frames indicating if they have an APZ counterpart. r=mstange (2aef746ee1)
- Bug 1253860 - Skip paints for main thread scrolls if we can ask APZ to handle the scrolling for us. r=mstange (4483da1f16)
- Bug 1244116 - Telemetry for mixed content requests by plugins. r=smaug, p=ally (fd5f87f666)
- Bug 1252829 - CSP Telemetry. r=ckerschb, p=bsmedberg (8d340fa824)
- Bug 1246464: Add 'const' to some stylesheet args in nsDocument methods. r=heycam (4e744d81d2)
- Bug 1255705 - Add some useful logging that can be enabled at compile time. r=botond (80f0202160)
- Bug 1255856 - Don't allow paint-skipping if there are windowed plugins on the page. r=mstange,jimm (25e6d8ed22)
- Bug 1256727 - Don't allow paint-skipping on pages with scroll-linked effects. r=mstange (a8bace52ff)
- Bug 1247098 - Take document resolution into account when computing root composition bounds for displayport base. r=tnikkel (1b7b61c82e)
- Bug 1250550 - Ensure a scroll event posted during a refresh driver tick fires during that same tick. r=mats (d5bfc24524)
- Bug 1253739 - Fix incorrect namespace on forward declaration. r=botond (dfc7aac51e)
- Bug 1253489 - Update SendFenceHandleIfPresent() r=nical (798c209dff)
- Bug 1253860 - Stop APZC from reprocessing stale metrics on unrelated layer tree updates. r=botond (1013df0068)
- Bug 1253860 - Add machinery to update APZ's scroll offset without a main-thread paint. r=botond (cb95baf9c6)
- Bug 1239564 - Post translate maskSurface to renderTarget. r=roc (66c56d227d)
- Bug 1223736 - Part 2: Draw masks in the correct coordinate space when doing 3d transforms in BasicCompositor. r=lsalzman (2d62616534)
- Bug 1223736 - Part 3: Remove the distinction between 2d and 3d masks since it only adds complexity. r=Bas (61c2306875)
- Bug 1137561 - Follow up VS2015 build error. r=masayuki (f12716a1ab)
- Bug 1217275 Fix missing \n in IMMHandler::HandleDocumentFeed(), it was replaced to empty string accidentally r=m_kato (3315b1c270)
- Bug 1243268 - Adjust ATOK workaround. r=masayuki (13af7184d1)
- Bug 1242690 - If a drag block is interrupted by something else, have it create a new drag block when it resumes. r=rbarker (fe3dc8deac)
- Bug 1242690 - Add untransforming of mouse events not in a drag block. r=rbarker (a39e715efe)
- Bug 1241991 - Switch mTreeLock from a Monitor to a Mutex. r=kats (0eca284591)
- Bug 1242690 - Further refine the mouse event untransformation code to only apply to events directed at a scrollbar. r=rbarker (5c92ca2807)
- Bug 1251608 - Add a root-content annotation to the APZ test data structure. r=botond (a1ee8e496a)
- Bug 1249748 - Ensure the mHandledByAPZ flag is set on WidgetTouchEvents that are handled by APZ. r=botond (11bdfae896)
- Bug 1242690 - Don't apply the main-thread callback transform for events in a drag block. r=rbarker (3db1405b68)
- Bug 1243589 - Use SingleTiledContentClient even for scrollable layers if the layer is smaller than a single tile. r=mattwoodrow (56bb664de1)
- Bug 1250517 - Differentiate between no critical display port and empty critical display port in ClientTiledPaintedLayer; r=kats (1b809fac8e)
- Bug 1255448 - Call ClientMultiTiledLayerBuffer::PaintThebes even when region to paint is empty. r=mattwoodrow (31ac878dc0)
- Bug 1255907 - Fix unification build issues in APZ & Layers. r=kats (9829525402)
- Bug 1256344 - If a long-press is interrupted by a non-touch block, don't dispatch the long-press event. r=botond (b3bdd0e58e)
- Bug 1256341 - Guard against scenarios where GenerateSingleTap is called without an active touch block. r=botond (d4ec208407)
- Bug 1230552 - Minor follow-up to add an assertion. rs=kats (6f9eec7bd4)
- Bug 1247964 - Allow InputBlockState::SetScrolledApzc to accept new APZC when it is an ancestor of the current APZC r=kats # Please enter the commit message for your changes. Lines starting (08ce9cfa98)
- Bug 1257264 - When apz.allow_immediate_handoff=false, APZ handoff should not occur when panning changes direction r=botond (6ec9ec22e6)
- Bug 1250213 - Ensure the scroll offset does not go outside the page bounds when going full screen r=kats (ace8e8a80c)
- Bug 1241332 - part 1, Request content repaint at end of APZ animation r=kats (74f7e249f2)
- Bug 1255705 - Generalize the NotifyLayersUpdated short-circuit codepath to trigger on empty transactions as well. r=botond (0344d44844)
- Bug 1250614 - Repeated zooming in bug on mobile Wikipedia site r=botond (459f02b8d3)
- Bug 1251001 - Input fields at the bottom of a page do not pan into view when gaining focus. r=botond (770102bf9f)
- Bug 1190093 (Comment Tweak) - Add better comments for nsIDocument::mIsShowing and mVisible. r=me DONTBUILD (e3822ef086)
- Bug 1217226: P1. Use VideoInfo display size data rather than attempt to detect value in stream. r=cpearce (a4a7e9b19a)
- Bug 1217226: P2. Implement WMFMediaDataDecoder::ConfigurationChanged. r=cpearce (52177525c5)
- fix misspatch (61a694fe3d)
- Bug 1249706: Added telemetry for the proportion of frames dropped keyed by several details. r=jya (cb459d971c)
- Bug 1202296 - Recreate the MFTDecoder when we want to disable DXVA. r=cpearce (d82999e94f)
- Bug 1176071 - Handle WMF MFTDecoder returning success but no output, with telemetry. r=mattwoodrow,r=vladan (da8017c92b)
- align, cleanup (9a86d51dfd)
- no bug - fix case of nsIDocShell.h in WindowsUIUtils.cpp (0ccabaa445)
- Bug 1187724 Don't dispatch KeyboardEvents when the target of WM_APPCOMMAND is a windowed plug-in for preventing deadlock r=jimm (7b6d83559c)
- Bug 1187178 - Use MOZ_WINSDK_MAXVER instead of #ifndef. r=jimm (06c949ddb9)
- bits of Bug 1165515 - Part 13-2: Replace usage of PRLogModuleLevel (7beaa2dcc4)
- Bug 1257791: Return correct DPI and printing scale from nsDeviceContextSpecWin when printing to PDF. r=jimm (87360301ea)
- Bug 1242295 - Fix compile error in nsDeviceContextSpecWin. r=jimm (d1d4680319)
- Bug 1229881 - fix off-by-one error in nsPrinterEnumeratorWin::GetPrinterNameList; r=dbaron; a=KWierso (439061ba50)
- Bug 1239683 - Replace NS_UNCONSTRAINEDSIZE with NS_MAXSIZE in windows/nsWindow.cpp. r=mats (4135189bec)
- Bug 1033488 - Send RTL information to child process by WM_INPUTLANGCHANGE. r=masayuki (eaf8f70d34)
- Bug 1238137 - Telemetry pings for main thread touch scrolling (Windows only). r=kats (f2194a2965)
- Bug 1156182 - Ensure nsWindow::Destroy() is called before destroying mPresentLock to avoid a race with the compositor thread. r=Bas (0452ffc641)
- Bug 1173617. Don't cache titlebar caption sizes unless the widget has a titlebar. r=jimm (b29e190504)
- Bug 580165 - Clean up dead code related to missing screen managers in widget. r=jimm (bf83f21ddc)
- Bug 1256501: Fix warning C4312 with 64-bit VS2015 in widget/windows/nsWindow.cpp; r=jimm (635151964e)
- Bug 1242690 - Squash together DispatchAPZAwareEvent and DispatchInputEvent. r=dvander (d7b4fea361)
- Bug 1242616: Add break in nsWindow.cpp WM_GETOBJECT handling. r=tbsaunde (eb516d4119)
- Bug 1239353 - Don't try to change DPI on the fly for popup windows, they remain connected to their parent's presShell and therefore need to share its resolution. r=emk (1491b84fd1)
- Bug 1246389 - Resize window appropriately on WM_DPICHANGED messages for dynamic resolution changes. r=emk (f3dbfcdbb1)
- Bug 1254019 - Don't attempt to resize a maximized window on DPI change; and when handling a DPI change, constrain the resized window to the screen bounds. r=emk (2047c2dcb5)
- Bug 1252191 - use UniquePtr instead of ScopedFreePtr in PoisonIOInterposerMac.cpp; r=aklotz (7c26e55b76)
- Bug 1233208: Disable IOInterposer on Beta and Release; r=froydnj (04a6f8b07c)
- crashreporter (377572bbb1)
- Bug 1055322 - The realloc for libnestegg should free with size 0. r=froydnj (ea624646ca)
- Bug 1236789. Avoid creating an unnecessary thread pool thread for tail-dispatch in TaskQueue. r=bholley (e7fb9e4373)
- Bug 1255655 - Const-ify named CIDs. r=froydnj. (03b414d92b)
- Bug 1250396 (part 1) - Document a subtle contraint on nsIAtom. r=froydnj. (ff279149ac)
- Bug 1250396 (part 2) - Remove nsStaticAtomStringType. r=froydnj. (5520507680)
- Bug 1255343 - Stop returning nsresult from NS_RegisterStaticAtoms; r=ehsan (de1d387937)
- Bug 1251495 - remove unnecessary Logging.h include from nsStaticAtom.h; r=erahm (5226a840fa)

docshell/base/nsDocShell.cpp

@@ -13561,6 +13561,11 @@ public:
   {
     nsAutoPopupStatePusher popupStatePusher(mPopupState);
 
+    // We need to set up an AutoJSAPI here for the following reason: When we do
+    // OnLinkClickSync we'll eventually end up in nsGlobalWindow::OpenInternal
+    // which only does popup blocking if !LegacyIsCallerChromeOrNativeCode().
+    // So we need to fake things so that we don't look like native code as far
+    // as LegacyIsCallerNativeCode() is concerned.
     AutoJSAPI jsapi;
     if (mIsTrusted || jsapi.Init(mContent->OwnerDoc()->GetScopeObject())) {
       mHandler->OnLinkClickSync(mContent, mURI,