[Android] Fix a flicker in stopping Chrome

content/public/browser/android/compositor.h

Index: content/public/browser/android/compositor.h
diff --git a/content/public/browser/android/compositor.h b/content/public/browser/android/compositor.h
index 3cff0ea9ade03e4f8172e541c31c7039706a32ea..b72e9a0b2cb1d176cf9c969beaf7de4202af9e6c 100644
--- a/content/public/browser/android/compositor.h
+++ b/content/public/browser/android/compositor.h
@@ -75,6 +75,14 @@ class CONTENT_EXPORT Compositor {
   // Returns the resource manager associated with the compositor.
   virtual ui::ResourceManager& GetResourceManager() = 0;
 
+  // Pause the compositor, for the cases, e.g., when you want to make sure that
+  // tab is visible even when you are releasing resources in stopping the
+  // activity.
+  virtual void Pause() = 0;
+
+  // Resume the compositor.
+  virtual void Resume() = 0;
+
  protected:
   Compositor() {}
 };