[Chromoting] Initial plumbing for cursor shape.

remoting/host/capturer.h

Index: remoting/host/capturer.h
diff --git a/remoting/host/capturer.h b/remoting/host/capturer.h
index 5379e7ddc0285ee7683df3c0c3cfeac824b16670..0eaf1b41b91ae044f4677b894900d9b72e262ecf 100644
--- a/remoting/host/capturer.h
+++ b/remoting/host/capturer.h
@@ -7,11 +7,17 @@
 
 #include "base/basictypes.h"
 #include "base/callback.h"
-#include "remoting/base/capture_data.h"
+#include "media/base/video_frame.h"
 #include "third_party/skia/include/core/SkRegion.h"
 
 namespace remoting {
 
+namespace protocol {
+class CursorShapeInfo;
+}
+
+class CaptureData;
+
 // A class to perform the task of capturing the image of a window.
 // The capture action is asynchronous to allow maximum throughput.
 //
@@ -49,6 +55,10 @@ class Capturer {
   typedef base::Callback<void(scoped_refptr<CaptureData>)>
       CaptureCompletedCallback;
 
+  // CursorShapeChangedCallback is called when the cursor shape has changed.
+  typedef base::Callback<void(scoped_ptr<protocol::CursorShapeInfo>)>
+      CursorShapeChangedCallback;
+
   virtual ~Capturer() {};
 
   // Create platform-specific capturer.
@@ -69,7 +79,8 @@ class Capturer {
 #endif  // defined(OS_LINUX)
 
   // Called at the beginning of a capturing session.
-  virtual void Start() = 0;
+  virtual void Start(
+      const CursorShapeChangedCallback& callback) = 0;
 
   // Called at the end of a capturing session.
   virtual void Stop() = 0;