Cleanup shared memory handling in DesktopCapturer interface.

webrtc/modules/desktop_capture/desktop_and_cursor_composer.h

Index: webrtc/modules/desktop_capture/desktop_and_cursor_composer.h
diff --git a/webrtc/modules/desktop_capture/desktop_and_cursor_composer.h b/webrtc/modules/desktop_capture/desktop_and_cursor_composer.h
index 7a72031c791f0583fc7e5ea9b7a073a50a356394..6d381c8352c71d091bd28c2d7e215d9c62b3feef 100644
--- a/webrtc/modules/desktop_capture/desktop_and_cursor_composer.h
+++ b/webrtc/modules/desktop_capture/desktop_and_cursor_composer.h
@@ -20,8 +20,8 @@ namespace webrtc {
 // A wrapper for DesktopCapturer that also captures mouse using specified
 // MouseCursorMonitor and renders it on the generated streams.
 class DesktopAndCursorComposer : public DesktopCapturer,
-                            public DesktopCapturer::Callback,
-                            public MouseCursorMonitor::Callback {
+                                 public DesktopCapturer::Callback,
+                                 public MouseCursorMonitor::Callback {
  public:
   // Creates a new blender that captures mouse cursor using |mouse_monitor| and
   // renders it into the frames generated by |desktop_capturer|. If
@@ -33,12 +33,13 @@ class DesktopAndCursorComposer : public DesktopCapturer,
 
   // DesktopCapturer interface.
   void Start(DesktopCapturer::Callback* callback) override;
+  void SetSharedMemoryFactory(
+      rtc::scoped_ptr<SharedMemoryFactory> shared_memory_factory) override;
   void Capture(const DesktopRegion& region) override;
   void SetExcludedWindow(WindowId window) override;
 
  private:
   // DesktopCapturer::Callback interface.
-  SharedMemory* CreateSharedMemory(size_t size) override;
   void OnCaptureCompleted(DesktopFrame* frame) override;
 
   // MouseCursorMonitor::Callback interface.