Begin adding support for tab mirroring via the MediaStream audio/video capturing

content/browser/renderer_host/media/video_capture_host.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // VideoCaptureHost serves video capture related messages from
-// VideCaptureMessageFilter which lives inside the render process.
+// VideoCaptureMessageFilter which lives inside the render process.
 //
 // This class is owned by BrowserRenderProcessHost, and instantiated on UI
 // thread, but all other operations and method calls happen on IO thread.
 //
 // Here's an example of a typical IPC dialog for video capture:
 //
 //   Renderer                          VideoCaptureHost
 //      |                                     |
 //      |  VideoCaptureHostMsg_Start >        |
 //      |  < VideoCaptureMsg_DeviceInfo       |
@@ skipping 57 matching lines @@
  private:
   friend class content::BrowserThread;
   friend class base::DeleteHelper<VideoCaptureHost>;
   friend class MockVideoCaptureHost;
   friend class VideoCaptureHostTest;
 
   virtual ~VideoCaptureHost();
 
   // IPC message: Start capture on the VideoCaptureDevice referenced by
   // VideoCaptureParams::session_id. |device_id| is an id created by
-  // VideCaptureMessageFilter to identify a session
-  // between a VideCaptureMessageFilter and a VideoCaptureHost.
+  // VideoCaptureMessageFilter to identify a session
+  // between a VideoCaptureMessageFilter and a VideoCaptureHost.
   void OnStartCapture(int device_id,
                       const media::VideoCaptureParams& params);
   void OnControllerAdded(
       int device_id, const media::VideoCaptureParams& params,
       VideoCaptureController* controller);
   void DoControllerAddedOnIOThread(
       int device_id, const media::VideoCaptureParams params,
       VideoCaptureController* controller);
 
   // IPC message: Stop capture on device referenced by |device_id|.
@@ skipping 41 matching lines @@
 
   struct Entry;
   typedef std::map<VideoCaptureControllerID, Entry*> EntryMap;
   // A map of VideoCaptureControllerID to its state and VideoCaptureController.
   EntryMap entries_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureHost);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_HOST_H_