Tiny little refactoring of DesktopEnvironment.

remoting/host/mouse_clamping_filter.cc

Index: remoting/host/mouse_clamping_filter.cc
diff --git a/remoting/host/mouse_clamping_filter.cc b/remoting/host/mouse_clamping_filter.cc
index 04ee46cfe70f4bfb288166dc8252aeba5efa292a..eceb640980e5f8f21ef069e842ff1608b5c80286 100644
--- a/remoting/host/mouse_clamping_filter.cc
+++ b/remoting/host/mouse_clamping_filter.cc
@@ -4,14 +4,15 @@
 
 #include "remoting/host/mouse_clamping_filter.h"
 
-#include "remoting/capturer/video_frame_capturer.h"
+#include "remoting/host/desktop_environment.h"
 #include "remoting/proto/event.pb.h"
 
 namespace remoting {
 
-MouseClampingFilter::MouseClampingFilter(VideoFrameCapturer* capturer,
-                                         protocol::InputStub* input_stub)
-  : MouseInputFilter(input_stub), capturer_(capturer) {
+MouseClampingFilter::MouseClampingFilter(
+    DesktopEnvironment* desktop_environment,
+    protocol::InputStub* input_stub)
+  : MouseInputFilter(input_stub), desktop_environment_(desktop_environment) {
 }
 
 MouseClampingFilter::~MouseClampingFilter() {
@@ -19,8 +20,9 @@ MouseClampingFilter::~MouseClampingFilter() {
 
 void MouseClampingFilter::InjectMouseEvent(const protocol::MouseEvent& event) {
   // Ensure that the MouseInputFilter is clamping to the current dimensions.
-  set_output_size(capturer_->size_most_recent());
-  set_input_size(capturer_->size_most_recent());
+  SkISize screen_size = desktop_environment_->GetScreenSize();
+  set_output_size(screen_size);
+  set_input_size(screen_size);
   MouseInputFilter::InjectMouseEvent(event);
 }