aura: Allow platform to choose how it retrieves ICCProfile.

ui/aura/window_tree_host.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_AURA_WINDOW_TREE_HOST_H_
 #define UI_AURA_WINDOW_TREE_HOST_H_
 
 #include <vector>
 
 #include "base/event_types.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "ui/aura/aura_export.h"
 #include "ui/base/cursor/cursor.h"
 #include "ui/base/ime/input_method_delegate.h"
 #include "ui/events/event_source.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace gfx {
+class ICCProfile;
 class Insets;
 class Point;
 class Rect;
 class Size;
 class Transform;
 }
 
 namespace ui {
 class Compositor;
 class EventProcessor;
@@ skipping 176 matching lines @@
 
   // kCalled when the cursor visibility has changed.
   virtual void OnCursorVisibilityChangedNative(bool show) = 0;
 
   // Shows the WindowTreeHost.
   virtual void ShowImpl() = 0;
 
   // Hides the WindowTreeHost.
   virtual void HideImpl() = 0;
 
+  virtual gfx::ICCProfile GetICCProfileForCurrentDisplay();
+
   // Overridden from ui::EventSource:
   ui::EventProcessor* GetEventProcessor() override;
 
  private:
   friend class test::WindowTreeHostTestApi;
 
   // Moves the cursor to the specified location. This method is internally used
   // by MoveCursorTo() and MoveCursorToHostLocation().
   void MoveCursorToInternal(const gfx::Point& root_location,
                             const gfx::Point& host_location);
@@ skipping 25 matching lines @@
   bool owned_input_method_;
 
   gfx::Insets output_surface_padding_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeHost);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_TREE_HOST_H_