Tiny little refactoring of DesktopEnvironment.

remoting/host/mouse_clamping_filter.h

Index: remoting/host/mouse_clamping_filter.h
diff --git a/remoting/host/mouse_clamping_filter.h b/remoting/host/mouse_clamping_filter.h
index 02ff17a214cb80255670012c92bd773fd2fe3581..ceca553566f9ef2231e87f4fd822eb3c8502d065 100644
--- a/remoting/host/mouse_clamping_filter.h
+++ b/remoting/host/mouse_clamping_filter.h
@@ -10,14 +10,14 @@
 
 namespace remoting {
 
-class VideoFrameCapturer;
+class DesktopEnvironment;
 
 // Filtering InputStub implementation which clamps mouse each mouse event to
 // the current dimensions of a VideoFrameCapturer instance before passing
 // them on to the target |input_stub|.
 class MouseClampingFilter : public protocol::MouseInputFilter {
  public:
-  MouseClampingFilter(VideoFrameCapturer* capturer,
+  MouseClampingFilter(DesktopEnvironment* desktop_environment,
                       protocol::InputStub* input_stub);
   virtual ~MouseClampingFilter();
 
@@ -25,7 +25,7 @@ class MouseClampingFilter : public protocol::MouseInputFilter {
   virtual void InjectMouseEvent(const protocol::MouseEvent& event) OVERRIDE;
 
  private:
-  VideoFrameCapturer* capturer_;
+  DesktopEnvironment* desktop_environment_;
 
   DISALLOW_COPY_AND_ASSIGN(MouseClampingFilter);
 };