Clean-up: Remove long-irrelevant TODO comment in web_contents_video_capture_device.h.

content/browser/media/capture/web_contents_video_capture_device.h

Index: content/browser/media/capture/web_contents_video_capture_device.h
diff --git a/content/browser/media/capture/web_contents_video_capture_device.h b/content/browser/media/capture/web_contents_video_capture_device.h
index 3e8805b41c7399a43e7e1ec3752e5af2596d85d2..16c7b09f8e1156b475f35829d658cf2546bdb7d7 100644
--- a/content/browser/media/capture/web_contents_video_capture_device.h
+++ b/content/browser/media/capture/web_contents_video_capture_device.h
@@ -35,8 +35,6 @@ class CONTENT_EXPORT WebContentsVideoCaptureDevice
   // |destroy_cb| is invoked on an outside thread once all outstanding objects
   // are completely destroyed -- this will be some time after the
   // WebContentsVideoCaptureDevice is itself deleted.
-  // TODO(miu): Passing a destroy callback suggests needing to revisit the
-  // design philosophy of an asynchronous DeAllocate().  http://crbug.com/158641
   static media::VideoCaptureDevice* Create(const std::string& device_id);
 
   virtual ~WebContentsVideoCaptureDevice();