Part 1: Refactor Android WebView graphics code

android_webview/browser/browser_view_renderer_client.h

Index: android_webview/browser/browser_view_renderer_client.h
diff --git a/android_webview/browser/browser_view_renderer_client.h b/android_webview/browser/browser_view_renderer_client.h
index ebf5b7bc93e1e77673b2c62cae11a7bd621f8752..aa659c2a082ab94e072e39363d6f3ef401898092 100644
--- a/android_webview/browser/browser_view_renderer_client.h
+++ b/android_webview/browser/browser_view_renderer_client.h
@@ -14,13 +14,6 @@ namespace android_webview {
 
 class BrowserViewRendererClient {
  public:
-  // Request DrawGL be called. Passing null |canvas| implies the request
-  // will be of AwDrawGLInfo::kModeProcess type. |wait_for_completion|
-  // will cause the call to block until DrawGL has happened; it does not
-  // work when |canvas| is not NULL. The callback may never be made, and
-  // the mode may be promoted to kModeDraw.
-  virtual bool RequestDrawGL(jobject canvas, bool wait_for_completion) = 0;
-
   // Called when a new Picture is available. Needs to be enabled
   // via the EnableOnNewPicture method.
   virtual void OnNewPicture() = 0;
@@ -28,12 +21,6 @@ class BrowserViewRendererClient {
   // Called to trigger view invalidations.
   virtual void PostInvalidate() = 0;
 
-  // Called to update the parent draw constraints in browser view renderer.
-  virtual void UpdateParentDrawConstraints() = 0;
-
-  // Called if commit is skipped due to pipeline stall.
-  virtual void DidSkipCommitFrame() = 0;
-
   // Called to get view's absolute location on the screen.
   virtual gfx::Point GetLocationOnScreen() = 0;