Refactor BrowserViewRenderer-RenderThreadManager relationship.

android_webview/browser/render_thread_manager_client.h

 // Copyright 2016 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 ANDROID_WEBVIEW_BROWSER_RENDER_THREAD_MANAGER_CLIENT_H_
 #define ANDROID_WEBVIEW_BROWSER_RENDER_THREAD_MANAGER_CLIENT_H_
 
 namespace android_webview {
 
 class RenderThreadManagerClient {
  public:
-  virtual void OnParentDrawConstraintsUpdated() = 0;
-
   // Request DrawGL to be in called AwDrawGLInfo::kModeProcess type.
   // |wait_for_completion| will cause the call to block until DrawGL has
   // happened. The callback may never be made, and the mode may be promoted to
   // kModeDraw.
   virtual bool RequestInvokeGL(bool wait_for_completion) = 0;
 
   // Call postInvalidateOnAnimation for invalidations. This is only used to
   // synchronize draw functor destruction.
   virtual void DetachFunctorFromView() = 0;
 
  protected:
   virtual ~RenderThreadManagerClient() {}
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_RENDER_THREAD_MANAGER_CLIENT_H_