Enables fullscreen subtitle and media control from Blink

content/public/browser/android/compositor.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
 #define CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
 
 #include "base/callback.h"
 #include "cc/resources/ui_resource_bitmap.h"
 #include "cc/resources/ui_resource_client.h"
@@ skipping 43 matching lines @@
   // having been made visible again.
   virtual void SetVisible(bool visible) = 0;
 
   // Set the output surface handle which the compositor renders into.
   // DEPRECATED: Use SetSurface() which takes a Java Surface object.
   virtual void SetWindowSurface(ANativeWindow* window) = 0;
 
   // Set the output surface which the compositor renders into.
   virtual void SetSurface(jobject surface) = 0;
 
+  // Tells the view tree to assume a transparent background when rendering.
+  virtual void SetHasTransparentBackground(bool flag) = 0;
+
   // Attempts to composite and read back the result into the provided buffer.
   // The buffer must be at least window width * height * 4 (RGBA) bytes large.
   // The buffer is not modified if false is returned.
   virtual bool CompositeAndReadback(void *pixels, const gfx::Rect& rect) = 0;
 
   // Composite immediately. Used in single-threaded mode.
   virtual void Composite() = 0;
 
   // Generates a UIResource and returns a UIResourceId.  May return 0.
   virtual cc::UIResourceId GenerateUIResource(
@@ skipping 27 matching lines @@
   virtual bool CopyTextureToBitmap(blink::WebGLId texture_id,
                                    const gfx::Rect& src_rect,
                                    gfx::JavaBitmap& bitmap) = 0;
  protected:
   Compositor() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_