Teach gfx::Screen about color profiles

ash/display/screen_ash.cc

Index: ash/display/screen_ash.cc
diff --git a/ash/display/screen_ash.cc b/ash/display/screen_ash.cc
index 9d42e49e26724dc8ee03b2daa08fc3eb282b9539..0deabd020c31299f0ca35e6862bf51f5077b8a06 100644
--- a/ash/display/screen_ash.cc
+++ b/ash/display/screen_ash.cc
@@ -94,6 +94,10 @@ class ScreenForShutdown : public gfx::Screen {
       const OVERRIDE {
     return primary_display_;
   }
+  virtual bool GetDisplayColorProfile(gfx::NativeView view,
+      std::vector<char>* color_profile) const OVERRIDE {
+    return false;
+  }
   virtual gfx::Display GetDisplayNearestPoint(
       const gfx::Point& point) const OVERRIDE {
     return FindDisplayNearestPoint(display_list_, point);
@@ -248,6 +252,12 @@ gfx::Display ScreenAsh::GetDisplayNearestWindow(gfx::NativeView window) const {
   return display_manager->GetDisplayForId(id);
 }
 
+bool ScreenAsh::GetDisplayColorProfile(
+    gfx::NativeView view, std::vector<char>* color_profile) const {
+  // TODO(port): consider display color profile support.
+  return false;
+}
+
 gfx::Display ScreenAsh::GetDisplayNearestPoint(const gfx::Point& point) const {
   const gfx::Display& display =
       GetDisplayManager()->FindDisplayContainingPoint(point);