Revert "Revert "Make HWUI's surface Reliable^TM""

This reverts commit dd08224e4d75689c42bf452d44617f84072649a1.

Bug: 120097554
Bug: 120342364
Bug: 120421537

Test: verified emulator can boot OK, with no log warnings
Test: verified keyboard works in landscape

Change-Id: Iae2cd1140d81755b126adfb21ec885181f3bc6b6
diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index 70be4a6..9e7abf4 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -25,6 +25,7 @@
 #include "IRenderPipeline.h"
 #include "LayerUpdateQueue.h"
 #include "RenderNode.h"
+#include "ReliableSurface.h"
 #include "renderthread/RenderTask.h"
 #include "renderthread/RenderThread.h"
 #include "thread/Task.h"
@@ -219,7 +220,7 @@
     EGLint mLastFrameHeight = 0;
 
     RenderThread& mRenderThread;
-    sp<Surface> mNativeSurface;
+    sp<ReliableSurface> mNativeSurface;
     // stopped indicates the CanvasContext will reject actual redraw operations,
     // and defer repaint until it is un-stopped
     bool mStopped = false;