Backed out changeset 8ebfd8ca2b65 for robocop failures. CLOSED TREE

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rename : mobile/android/base/WebApp.java => mobile/android/base/WebAppImpl.java
Bug 931146 - Set FrameMetrics mMayHaveTouchListeners for all frames that call RecordFrameMetrics. Fixes missing touch info for sub documents. r=tnikkel,kats
Bug 918273 - Fix: ContentReceivedTouch doesn't actually cancel event processing in the apzc. r=kats
Bug 931504 - Fire touchcancel to content for every touch point the apz consumes. r=tabraldes
Bug 931763 - Simplify handling of first touch start and touch move in MetroInput. r=tabraldes
Bug 931706 - Changing contentViewer.authorStyleDisabled should send a notification r=bz