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

remoting/host/clipboard.h

Index: remoting/host/clipboard.h
diff --git a/remoting/host/clipboard.h b/remoting/host/clipboard.h
index e02c09d2a64831e47a8230911b2d9f9ca2ebbbe8..8ebe2d85c1f2340dcea1ce3ade1fc09c401407c0 100644
--- a/remoting/host/clipboard.h
+++ b/remoting/host/clipboard.h
@@ -13,6 +13,7 @@ namespace remoting {
 
 namespace protocol {
 class ClipboardEvent;
+class ClipboardStub;
 }  // namespace protocol
 
 // All Clipboard methods should be run on the UI thread, so that the Clipboard
@@ -22,7 +23,7 @@ class Clipboard {
   virtual ~Clipboard() {};
 
   // Initialises any objects needed to read from or write to the clipboard.
-  virtual void Start() = 0;
+  virtual void Start(scoped_ptr<protocol::ClipboardStub> client_clipboard) = 0;
 
   // Destroys any objects initialised by Start().
   virtual void Stop() = 0;