Implement cursor compositing mode on Ash

Currently this is only enabled when the accessibility feature
"high contrast" mode or "large cursor" mode is enabled.

We do not enable this by default because cursor compositing
shows some lags especially on slow machines or when CPU is busy.

BUG=290837
TEST=trybot, manual testing mirror/extend/dual display mode
R=derat@chromium.org, oshima@chromium.org

Review URL: https://codereview.chromium.org/145313003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249289 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 3 insertions, 12 deletions

diff --git a/ash/display/mirror_window_controller.h b/ash/display/mirror_window_controller.h
index 86773f1..06a586e 100644
--- a/ash/display/mirror_window_controller.h
+++ b/ash/display/mirror_window_controller.h
@@ -32,7 +32,6 @@ class MirrorWindowTestApi;
 
 namespace internal {
 class DisplayInfo;
-class CursorWindowDelegate;
 
 // An object that copies the content of the primary root window to a
 // mirror window. This also draws a mouse cursor as the mouse cursor
@@ -53,15 +52,12 @@ class ASH_EXPORT MirrorWindowController : public aura::RootWindowObserver {
   // Close the mirror window.
   void Close();
 
-  // Updates the mirrored cursor location,shape and
-  // visibility.
-  void UpdateCursorLocation();
-  void SetMirroredCursor(gfx::NativeCursor cursor);
-  void SetMirroredCursorVisibility(bool visible);
-
   // aura::RootWindowObserver overrides:
   virtual void OnWindowTreeHostResized(const aura::RootWindow* root) OVERRIDE;
 
+  // Returns the mirror root window.
+  aura::RootWindow* root_window() const { return root_window_.get(); }
+
  private:
   friend class test::MirrorWindowTestApi;
 
@@ -69,12 +65,7 @@ class ASH_EXPORT MirrorWindowController : public aura::RootWindowObserver {
   // configuration.
   scoped_ptr<aura::RootWindowTransformer> CreateRootWindowTransformer() const;
 
-  int current_cursor_type_;
-  gfx::Display::Rotation current_cursor_rotation_;
-  aura::Window* cursor_window_;  // owned by root window.
   scoped_ptr<aura::RootWindow> root_window_;
-  scoped_ptr<CursorWindowDelegate> cursor_window_delegate_;
-  gfx::Point hot_point_;
   gfx::Size mirror_window_host_size_;
   scoped_refptr<ui::Reflector> reflector_;