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

- Bug 1198459 - Update telemetry data based on the use of the forced enable pref. r=felipe (f33f0efc9a)
- Bug 1234210 - Restrict updates for accessibility.lastLoadDate to shutdown. r=trevor (5e484eb7ba)
- Bug 1231517 - part 3, Add ZoomToRect function to nsIWidget classes r=kats (57496a18cd)
- Bug 1229393 - Ensure that all the touch points from the original touch go to APZCCallbackHelper::SendSetTargetAPZCNotification. r=botond (45ce1737ac)
- Bug 1174323 part 1 - Add nsDOMWindowUtils::SendNativeMouseMove and EventUtils.sendNativeMouseMove. r=smaug (527439f71b)
- Bug 1180351 - Enable pointerlock tests on Windows and Linux. r=smaug (833fac9ba9)
- Bug 1180351 - Followup: Disable pointerlock tests on Windows for frequently failing tests. r=turning off tests (02525d24f4)
- Bug 1174323 part 2 - Use native mouse move to improve robustness of screenClientXYConst subtest. r=smaug (7e3fb884d3)
- Bug 1231517 - part 4, Add ZoomToFocusedInput function to nsDOMWindowUtils r=kats (a1f3e3b4fd)
- Bug 1153156 part.1 Move nsBaseWidget::OverrideSystemMouseScrollSpeed() to WidgetWheelEvent r=smaug, sr=smaug (8a95d65d55)
- bug 726265 don't activate ELAN swipe hack unless ScanCode is zero r=heycam (477a5ce06a)
- Bug 1235686 part.1 MouseScrollHandler should refresh the cache of system settings at handling wheel messages if the pref doesn't allow to cache system settings r=jimm (6cae8d2b07)
- Bug 1235686 part.2 Don't refresh the cache of system settings at handling wheel messages if the scroll amout values are initialized with prefs r=jimm (ead872b6bf)
- Bug 1235686 part.3 Don't trust system settings cache if SynTP of Synaptics is installed r=jimm (d56a034a42)
- Bug 1235686 part.4 Don't trust system settings cache if Apoint of Alps is installed r=jimm (85cb23e185)
- Bug 1153156 part.2 Make WidgetWheelEvent store if overriding system scroll speed is allowed and it shouldn't be allowed if scroll speed isn't system default settings on Windows r=smaug+jimm (3d5fc255db)
- Bug 1153156 part.3 Don't allow to override system scroll speed if the wheel event causes too fast scroll r=smaug+jimm (21e10640ac)
- Bug 1236750 - Rename ViewTransform to AsyncTransform. r=kats (1ccd8af262)
- Bug 1226826 - Record if painted displayport updates were due to repaints from the relevant layer tree or not. r=botond (e28315ec88)
- Bug 1228641. Add a initializer_list constructor to nsTArray. r=froydnj (448f69f610)
- Bug 962243 - Gtest for being able to pan after lifting a finger from a pinch. r=botond (a1687f190c)
- Bug 1031443 - Allow panning in the pinching state even if zooming is disabled;r=botond (aacb1a28bd)
- Bug 1231504 - Move some prefs from b2g.js to all.js. r=botond (c9801602ba)
- Bug 1092128 - Ensure the tests for touch action disabled actually disable touch action. r=botond (ec3fae4568)
- Bug 1014691 - Get TestAsyncPanZoomController to compile in its new location. r=kats (9dd104c6fd)
- Bug 1240244 - Split APZ gtests into several files. r=kats (0ce8bd4f80)
- Bug 1235994 - Add a flag to wheel events to track if they may have momentum following them. r=mstange (d5b2099244)
- Bug 1153156 part.4 Make APZC system scroll speed overriding aware r=mstange (f9d49eb79c)
- Bug 1233118 - implement IAccessible2_3::selectionRanges, r=yzen (d85fe6cf64)
- bug 1235965 - null check mDoc in AccessibleWrap::Shutdown() r=davidb (cb775e5c00)
- Bug 1130096 - Convert embedding/components/find/ to Gecko style. r=mccr8 (83d043e841)
- Bug 1164473 - Resolve issue when touches stop working after pen was activated. r=jimm (16ce68b032)
- Bug 1171712 - Implement separated InkColletor and InkCollectorEvent classes. r=smaug, r=jimm (8000e742b8)
- bug 1198656 interpret null ConvolverNode mBuffer as a buffer of zerosr=padenot (339e1f9904)
- bug 930257 finish Oscillator on processing last non-null block r=padenot (2719eee12b)
- Bug 1240411: P1. Clean up webaudio headers. r=cpearce (f169dc2789)
- Bug 1219711 - Don't rely on timer interval in fake audio track. r=jesup (f140fd848a)
- Bug 1223655 - Only check for track end if track exists in MediaEngineDefaultAudioSource. r=jesup (3055b4529f)
- Bug 1223655 - Also don't check time of data end if track has ended. r=jesup (bbdf7c5be5)
- Bug 1223655 - Fix opt build bustage on a CLOSED TREE. r=bustage (d546f4ba0b)
- Bug 1164463 followup: Add missing 'override' keyword to MediaEngineDefault::Shutdown(). rs=ehsan (33bf959d84)
- Bug 1240411: P2. Clean up webrtc headers. r=jesup (73c2bdf22d)
- Bug 1240411: P4. Clean up readers headers. r=cpearce (748d2bf9e8)
- Bug 1232527 - Remove GMPVideoDecoderTrialCreator and friends. r=jwwang (e0decf270f)
- Bug 1240411: P5. Clean up GMP headers. r=cpearce (0336b7fd9c)
- Bug 1240252: Add missing "mozilla::" namespace prefix before usage of type LayoutDeviceIntRegion, to fix local build bustage. r=njn (54d5a4a553)
- Bug 1245241 - part 1 - Close Shmem file handles after mapping them when possible to reduce exhaustion issues. r=billm (631c2b6da5)

dom/base/nsDOMWindowUtils.cpp

@@ -106,6 +106,7 @@
 #include "nsDocument.h"
 #include "HTMLImageElement.h"
 #include "mozilla/css/ImageLoader.h"
+#include "mozilla/layers/APZCTreeManager.h" // for layers::ZoomToRectBehavior
 
 #ifdef XP_WIN
 #undef GetClassName
@@ -1069,6 +1070,24 @@ nsDOMWindowUtils::SendNativeMouseEvent(int32_t aScreenX,
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsDOMWindowUtils::SendNativeMouseMove(int32_t aScreenX,
+                                      int32_t aScreenY,
+                                      nsIDOMElement* aElement,
+                                      nsIObserver* aObserver)
+{
+  // get the widget to send the event to
+  nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElement);
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  NS_DispatchToMainThread(NS_NewRunnableMethodWithArgs
+    <LayoutDeviceIntPoint, nsIObserver*>
+    (widget, &nsIWidget::SynthesizeNativeMouseMove,
+    LayoutDeviceIntPoint(aScreenX, aScreenY), aObserver));
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsDOMWindowUtils::SendNativeMouseScrollEvent(int32_t aScreenX,
                                              int32_t aScreenY,
@@ -2531,6 +2550,59 @@ nsDOMWindowUtils::FlushApzRepaints(bool* aOutResult)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsDOMWindowUtils::ZoomToFocusedInput()
+{
+  nsIWidget* widget = GetWidget();
+  if (!widget) {
+    return NS_OK;
+  }
+  // If APZ is not enabled, this function is a no-op.
+  if (!widget->AsyncPanZoomEnabled()) {
+    return NS_OK;
+  }
+
+  nsFocusManager* fm = nsFocusManager::GetFocusManager();
+  if (!fm) {
+    return NS_OK;
+  }
+
+  nsIContent* content = fm->GetFocusedContent();
+  if (!content) {
+    return NS_OK;
+  }
+
+  nsIPresShell* shell = APZCCallbackHelper::GetRootContentDocumentPresShellForContent(content);
+  if (!shell) {
+    return NS_OK;
+  }
+
+  nsIScrollableFrame* rootScrollFrame = shell->GetRootScrollFrameAsScrollable();
+  if (!rootScrollFrame) {
+    return NS_OK;
+  }
+
+  nsIDocument* document = shell->GetDocument();
+  if (!document) {
+    return NS_OK;
+  }
+
+  uint32_t presShellId;
+  FrameMetrics::ViewID viewId;
+  if (APZCCallbackHelper::GetOrCreateScrollIdentifiers(document->GetDocumentElement(), &presShellId, &viewId)) {
+    uint32_t flags = layers::DISABLE_ZOOM_OUT;
+    if (!Preferences::GetBool("formhelper.autozoom")) {
+      flags |= layers::PAN_INTO_VIEW_ONLY;
+    }
+
+    CSSRect bounds = nsLayoutUtils::GetBoundingContentRect(content, rootScrollFrame);
+    bounds.Inflate(15.0f, 0.0f);
+    widget->ZoomToRect(presShellId, viewId, bounds, flags);
+  }
+
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsDOMWindowUtils::ComputeAnimationDistance(nsIDOMElement* aElement,
                                            const nsAString& aProperty,