Unit Test for WebView animating in and out of screen

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 ee6aa29914b2c8fdca6fada0ab33a5f3bf0516b6..44b1b4bfa53e9daa5dac013824ca3e6ab8f69f05 100644
--- a/android_webview/browser/browser_view_renderer.h
+++ b/android_webview/browser/browser_view_renderer.h
@@ -112,6 +112,11 @@ class BrowserViewRenderer : public content::SynchronousCompositorClient {
   void DidSkipCommitFrame();
   void DetachFunctorFromView();
 
+  // Visible for testing.
+  ParentCompositorDrawConstraints& parent_draw_constraints() {

[boliu, 2015/03/13 14:23:05]

add _for_testing to the method name, return type should be const&

[hush (inactive), 2015/03/13 17:46:53]

Done.

+    return parent_draw_constraints_;
+  }
+
  private:
   void SetTotalRootLayerScrollOffset(gfx::Vector2dF new_value_dip);
   bool CanOnDraw();