[Chromoting] Let the Windows IT2Me host send clipboard events to the client.

remoting/host/clipboard_mac.mm

Index: remoting/host/clipboard_mac.mm
diff --git a/remoting/host/clipboard_mac.mm b/remoting/host/clipboard_mac.mm
index fb400b3ff98b1dcadf5953feb8400d99b2c34771..32f5ef7f0e540c914ab7ff5e1cf397307301f196 100644
--- a/remoting/host/clipboard_mac.mm
+++ b/remoting/host/clipboard_mac.mm
@@ -13,7 +13,8 @@ class ClipboardMac : public Clipboard {
   ClipboardMac();
 
   // Must be called on the UI thread.
-  virtual void Start() OVERRIDE;
+  virtual void Start(
+      const scoped_refptr<protocol::ClipboardProxy>& client_clipboard) OVERRIDE;
   virtual void InjectClipboardEvent(
       const protocol::ClipboardEvent& event) OVERRIDE;
   virtual void Stop() OVERRIDE;
@@ -22,7 +23,8 @@ class ClipboardMac : public Clipboard {
   DISALLOW_COPY_AND_ASSIGN(ClipboardMac);
 };
 
-void ClipboardMac::Start() {
+void ClipboardMac::Start(
+    const scoped_refptr<protocol::ClipboardProxy>& client_clipboard) {
   NOTIMPLEMENTED();
 }