Fix UpdateTilePriorities viewport in Android WebView.

cc/output/output_surface.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_OUTPUT_OUTPUT_SURFACE_H_
 #define CC_OUTPUT_OUTPUT_SURFACE_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 150 matching lines @@
 
   // Forwarded to OutputSurfaceClient but threaded through OutputSurface
   // first so OutputSurface has a chance to update the FrameRateController
   void SetNeedsRedrawRect(gfx::Rect damage_rect);
   void BeginFrame(const BeginFrameArgs& args);
   void DidSwapBuffers();
   void OnSwapBuffersComplete(const CompositorFrameAck* ack);
   void DidLoseOutputSurface();
   void SetExternalStencilTest(bool enabled);
   void SetExternalDrawConstraints(const gfx::Transform& transform,
-                                  gfx::Rect viewport);
+                                  gfx::Rect viewport,
+                                  gfx::Rect clip,
+                                  bool valid_for_tile_management);
 
   // virtual for testing.
   virtual base::TimeDelta AlternateRetroactiveBeginFramePeriod();
   virtual void PostCheckForRetroactiveBeginFrame();
   void CheckForRetroactiveBeginFrame();
 
  private:
   OutputSurfaceClient* client_;
   friend class OutputSurfaceCallbacks;
 
   void SetUpContext3d();
   void ResetContext3d();
   void SetMemoryPolicy(const ManagedMemoryPolicy& policy,
                        bool discard_backbuffer_when_not_visible);
 
   // This stores a BeginFrame that we couldn't process immediately, but might
   // process retroactively in the near future.
   BeginFrameArgs skipped_begin_frame_args_;
 
   // check_for_retroactive_begin_frame_pending_ is used to avoid posting
   // redundant checks for a retroactive BeginFrame.
   bool check_for_retroactive_begin_frame_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(OutputSurface);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_OUTPUT_SURFACE_H_