Add synchronous requestDrawGL

android_webview/browser/shared_renderer_state.h

Index: android_webview/browser/shared_renderer_state.h
diff --git a/android_webview/browser/shared_renderer_state.h b/android_webview/browser/shared_renderer_state.h
index ec21663f203a160c4feaf7881dc488aa78ba1d36..c2c1eee864b0d8025c65ad819a54823138f52a84 100644
--- a/android_webview/browser/shared_renderer_state.h
+++ b/android_webview/browser/shared_renderer_state.h
@@ -5,6 +5,9 @@
 #ifndef ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
 #define ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
 
+#include <queue>
+
+#include "base/callback.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/synchronization/lock.h"
 #include "content/public/browser/android/synchronous_compositor.h"
@@ -55,6 +58,14 @@ class SharedRendererState {
   void SetDrawGLInput(const DrawGLInput& input);
   DrawGLInput GetDrawGLInput() const;
 
+  void ClearClosureQueue();
+  void AppendClosure(const base::Closure& closure);
+  // Will return empty closure if queue empty.
+  base::Closure PopFrontClosure();
+
+  void SetHardwareInitialized(bool initialized);
+  bool IsHardwareInitialized() const;
+
  private:
   void ClientRequestDrawGLOnUIThread();
 
@@ -68,6 +79,8 @@ class SharedRendererState {
   mutable base::Lock lock_;
   content::SynchronousCompositor* compositor_;
   DrawGLInput draw_gl_input_;
+  std::queue<base::Closure> closure_queue_;
+  bool hardware_initialized_;
 };
 
 }  // namespace android_webview