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

- Bug 1232902. Update ANGLE to chromium/2592 (89d3d3cfad)
- Bug 1251375. Update to ANGLE/2653 (98691dfd84)
- bits of Bug 1225280. Update ANGLE to chromium/2572. (b5eeadcb4e)
- Bug 1251375 - Cross compilation fixup. r=upstream (737d8f8554)
- rename back (e1ef46b16a)
- Bug 1261129: Make VP9 sample data const. r=kentuckyfriedtakahe (811eead31b)
- Bug 1263839 - WebM is now actually a VP9 sample; r=me (c6568d6d98)
- Bug 1263839: P2. Force re-run of VP9 benchmark based on a version check. r=kentuckyfriedtakahe (358409a235)
- Bug 1235503 - Fix -Wunreachable-code warnings in dom/media/. r=jya (dc6bebb141)
- Bug 1251184: [quicktime] P1. Report video/quicktime mimetype when sniffing. r=cpearce (056dda066a)
- Bug 1251184: [quicktime] P2. Use external plugin if available over native playback. r=cpearce (6f34c09ab6)
- Bug 1255050 - [1.1] Restrict media plugin decoder usage to Android ICS. r=snorp (ae801e040c)
- Bug 1229657: [MSE] Returns NotSupportedError if mimetype is invalid or not supported. r=gerald (a81df7babf)
- change errors returns (18b81f684e)
- rearrange to match gecko code (333c4c5f3a)
- Bug 1239607 - Let platform layer decide which codec to support and how to configure it. r=sotaro (63812a44d1)
- Bug 1248507 - p1. Pass DecoderDoctorDiagnostics to PDMs&more - r=jya (4175551833)
- Bug 1248507 - p2. DecoderDoctorDiagnostics boilerplate - r=jya (cb25b71956)
- Bug 1208371 - Forward declare DOMMediaStream in HTMLMediaElement.h. r=jesup (896080a020)
- Bug 1248507 - p3. Use DecoderDoctorDiagnostics - r=jya,bz (181966589e)
- Bug 1248507 - p4. DecoderDoctor base console message - r=bz (c5704ad2fe)
- Bug 1055776 - Move namespaceURI, prefix, localName from Node to Element; r=bz (ba7a18385d)
- Bug 842818 - Expose WebCrypto API to workers r=baku (966e5f3e75)
- Bug 1227790 - Update MediaKeyStatuses to include "released", "output-restricted" and "status-pending". r=bz (d9e7ddb298)
- Bug 1256046 - Hide MozPowerManager from the Web; r=khuey,bzbarsky (ec1da24251)
- Bug 1259581: Remove MOZ_MEDIA_NAVIGATOR. r=jesup (023a114462)
- Bug 1254956 - Implement Node.rootNode. r=Ms2ger,smaug (0133a41059)
- Bug 1264409 - Make last transaction ID available via nsIDOMWindowUtils, and pass transaction ID through MozAfterPaint. r=mattwoodrow,mrbkap (51184de1af)

dom/base/nsDocument.cpp

@@ -253,9 +253,7 @@
 
 #include "nsISpeculativeConnect.h"
 
-#ifdef MOZ_MEDIA_NAVIGATOR
 #include "mozilla/MediaManager.h"
-#endif // MOZ_MEDIA_NAVIGATOR
 #ifdef MOZ_WEBRTC
 #include "IPeerConnection.h"
 #endif // MOZ_WEBRTC
@@ -8866,13 +8864,11 @@ nsDocument::CanSavePresentation(nsIRequest *aNewRequest)
     }
   }
 
-#ifdef MOZ_MEDIA_NAVIGATOR
   // Check if we have active GetUserMedia use
   if (MediaManager::Exists() && win &&
       MediaManager::Get()->IsWindowStillActive(win->WindowID())) {
     return false;
   }
-#endif // MOZ_MEDIA_NAVIGATOR
 
 #ifdef MOZ_WEBRTC
   // Check if we have active PeerConnections