Tiling priorities in Android Webview.

android_webview/browser/browser_view_renderer.h

Index: android_webview/browser/browser_view_renderer.h
diff --git a/android_webview/browser/browser_view_renderer.h b/android_webview/browser/browser_view_renderer.h
index c89df00fdb91257098c69f878d282190b0032ccc..2b6c701caba0b5d37775d11bfd8eab719ef74324 100644
--- a/android_webview/browser/browser_view_renderer.h
+++ b/android_webview/browser/browser_view_renderer.h
@@ -198,6 +198,11 @@ class BrowserViewRenderer : public content::SynchronousCompositorClient,
   gfx::Vector2d last_on_draw_scroll_offset_;
   gfx::Rect last_on_draw_global_visible_rect_;
 
+  // The clip and transform from the parent compositor. These are only used for
+  // tiling priority.
+  gfx::Rect parent_clip_;
+  ParentCompositorDrawConstraints parent_draw_constraints_;
+
   // When true, we should continuously invalidate and keep drawing, for example
   // to drive animation. This value is set by the compositor and should always
   // reflect the expectation of the compositor and not be reused for other