gpu: Add CHROMIUM_schedule_ca_layer

ui/gl/gl_surface.h

Index: ui/gl/gl_surface.h
diff --git a/ui/gl/gl_surface.h b/ui/gl/gl_surface.h
index 7fc65f7d27075ce9d2c0c96e9552a5cec46c27f1..8659cb812319e32b289ba51ba94e681e69d8e6f0 100644
--- a/ui/gl/gl_surface.h
+++ b/ui/gl/gl_surface.h
@@ -26,6 +26,7 @@ class GLImage;
 namespace gfx {
 
 class GLContext;
+class Transform;
 class VSyncProvider;
 
 // Encapsulates a surface that can be rendered to with GL, hiding platform
@@ -144,6 +145,15 @@ class GL_EXPORT GLSurface : public base::RefCounted<GLSurface> {
                                     const Rect& bounds_rect,
                                     const RectF& crop_rect);
 
+  // Schedule a CALayer to be shown at swap time.
+  // All arguments correspond to their CALayer properties.
+  virtual bool ScheduleCALayer(gl::GLImage* contents_image,
+                               const RectF& contents_rect,
+                               float opacity,
+                               unsigned background_color,
+                               const SizeF& size,
+                               const Transform& transform);
+
   virtual bool IsSurfaceless() const;
 
   // Create a GL surface that renders directly to a view.