Tiling priorities in Android Webview.

cc/output/output_surface.h

Index: cc/output/output_surface.h
diff --git a/cc/output/output_surface.h b/cc/output/output_surface.h
index 07c0f262f5552c362d8205ef0129ccfb4b6c9159..e8eff5e6ea6900eaf7309405677448ba50e1645b 100644
--- a/cc/output/output_surface.h
+++ b/cc/output/output_surface.h
@@ -163,10 +163,13 @@ class CC_EXPORT OutputSurface {
   void ReclaimResources(const CompositorFrameAck* ack);
   void DidLoseOutputSurface();
   void SetExternalStencilTest(bool enabled);
-  void SetExternalDrawConstraints(const gfx::Transform& transform,
-                                  const gfx::Rect& viewport,
-                                  const gfx::Rect& clip,
-                                  bool resourceless_software_draw);
+  void SetExternalDrawConstraints(
+      const gfx::Transform& transform,
+      const gfx::Rect& viewport,
+      const gfx::Rect& clip,
+      const gfx::Rect& external_tiling_rect,
+      const gfx::Transform& external_tiling_transform,
+      bool resourceless_software_draw);
 
  private:
   void SetUpContext3d();