[Chromoting] Initial plumbing for cursor shape.

remoting/host/capturer_mac.cc

Index: remoting/host/capturer_mac.cc
diff --git a/remoting/host/capturer_mac.cc b/remoting/host/capturer_mac.cc
index 19f2e1c0090e5f552046ed13a1c3361f6752eadc..a10df8720b5bdcbb1cac1286121cf453702d5de3 100644
--- a/remoting/host/capturer_mac.cc
+++ b/remoting/host/capturer_mac.cc
@@ -160,6 +160,8 @@ class CapturerMac : public Capturer {
   // Capturer interface.
   virtual void Start() OVERRIDE;
   virtual void Stop() OVERRIDE;
+  virtual void SetCursorShapeChangedCallback(
+      const CursorShapeChangedCallback& callback) OVERRIDE;
   virtual void ScreenConfigurationChanged() OVERRIDE;
   virtual media::VideoFrame::Format pixel_format() const OVERRIDE;
   virtual void ClearInvalidRegion() OVERRIDE;
@@ -317,6 +319,11 @@ void CapturerMac::Stop() {
   }
 }
 
+void CapturerMac::SetCursorShapeChangedCallback(
+    const CursorShapeChangedCallback& callback) {
+  // TODO(garykac)
+}
+
 void CapturerMac::ScreenConfigurationChanged() {
   ReleaseBuffers();
   helper_.ClearInvalidRegion();