Mac Overlays: Plumb through GL solid color overlay support

ui/gl/gl_surface.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 UI_GL_GL_SURFACE_H_
 #define UI_GL_GL_SURFACE_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 122 matching lines @@
   // composition.
   // |image| to be presented by the overlay.
   // |bounds_rect| specify where it is supposed to be on the screen in pixels.
   // |crop_rect| specifies the region within the buffer to be placed inside
   // |bounds_rect|.
   virtual bool ScheduleOverlayPlane(int z_order,
                                     OverlayTransform transform,
                                     GLImage* image,
                                     const Rect& bounds_rect,
                                     const RectF& crop_rect);
-
+  // Schedule a solid color overlay plane to be shown at swap time.
+  virtual bool ScheduleSolidColorOverlayPlane(int z_order,
+                                              const Rect& bounds_rect,
+                                              float red,
+                                              float green,
+                                              float blue,
+                                              float alpha);
   virtual bool IsSurfaceless() const;
 
   // Create a GL surface that renders directly to a view.
   static scoped_refptr<GLSurface> CreateViewGLSurface(
       gfx::AcceleratedWidget window);
 
 #if defined(USE_OZONE)
   // Create a GL surface that renders directly into a window with surfaceless
   // semantics - there is no default framebuffer and the primary surface must
   // be presented as an overlay. If surfaceless mode is not supported or
@@ skipping 76 matching lines @@
 
  private:
   scoped_refptr<GLSurface> surface_;
 
   DISALLOW_COPY_AND_ASSIGN(GLSurfaceAdapter);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_SURFACE_H_