VideoCapture: more migration IPC-->mojo, part 6

content/renderer/media/video_capture_message_filter.h

Index: content/renderer/media/video_capture_message_filter.h
diff --git a/content/renderer/media/video_capture_message_filter.h b/content/renderer/media/video_capture_message_filter.h
index 6314af080fc62883aa5d69bd212182ff6c970cf9..3a2917045862a55f8cd1fdc632fad1595ca07b3d 100644
--- a/content/renderer/media/video_capture_message_filter.h
+++ b/content/renderer/media/video_capture_message_filter.h
@@ -1,11 +1,6 @@
 // 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.
-//
-// MessageFilter that handles video capture messages and delegates them to
-// video captures. VideoCaptureMessageFilter is operated on IO thread of
-// render process. It intercepts video capture messages and process them on
-// IO thread since these messages are time critical.
 
 #ifndef CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_MESSAGE_FILTER_H_
 #define CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_MESSAGE_FILTER_H_
@@ -15,28 +10,19 @@
 #include <map>
 
 #include "base/macros.h"
-#include "base/memory/shared_memory.h"
-#include "base/values.h"
 #include "content/common/content_export.h"
-#include "content/common/media/video_capture.h"
 #include "ipc/message_filter.h"
-#include "media/base/video_capture_types.h"
-#include "media/base/video_frame.h"
-
-struct VideoCaptureMsg_BufferReady_Params;
 
 namespace content {
 
+// MessageFilter that notifies a (series of) Delegates of incoming video capture
+// connections. VideoCaptureMessageFilter is operated on IO thread of render
+// process.
 class CONTENT_EXPORT VideoCaptureMessageFilter : public IPC::MessageFilter {
  public:
   class CONTENT_EXPORT Delegate {
    public:
-    // Called when a video frame buffer is created in the browser process.
-    virtual void OnBufferCreated(base::SharedMemoryHandle handle,
-                                 int length,
-                                 int buffer_id) = 0;
-
-    // Called when the delegate has been added to filter's delegate list.
+    // Called when a delegate has been added to the filter's delegate list.
     // |device_id| is the device id for the delegate.
     virtual void OnDelegateAdded(int32_t device_id) = 0;
 
@@ -48,13 +34,9 @@ class CONTENT_EXPORT VideoCaptureMessageFilter : public IPC::MessageFilter {
 
   // Add a delegate to the map.
   void AddDelegate(Delegate* delegate);
-
   // Remove a delegate from the map.
   void RemoveDelegate(Delegate* delegate);
 
-  // Send a message asynchronously.
-  virtual bool Send(IPC::Message* message);
-
   IPC::Channel* channel() const { return channel_; }
 
   // IPC::MessageFilter override. Called on IO thread.
@@ -63,24 +45,17 @@ class CONTENT_EXPORT VideoCaptureMessageFilter : public IPC::MessageFilter {
   void OnFilterRemoved() override;
   void OnChannelClosing() override;
 
+  void DoNothing() const {}
+
  protected:
   ~VideoCaptureMessageFilter() override;
 
  private:
-  typedef std::map<int32_t, Delegate*> Delegates;
-
-  // Receive a newly created buffer from browser process.
-  void OnBufferCreated(int device_id,
-                       base::SharedMemoryHandle handle,
-                       int length,
-                       int buffer_id);
-
-  // Finds the delegate associated with |device_id|, NULL if not found.
-  Delegate* find_delegate(int device_id) const;
-
   // A map of device ids to delegates.
+  using Delegates = std::map<int32_t, Delegate*>;
   Delegates delegates_;
   Delegates pending_delegates_;
+
   int32_t last_device_id_;
 
   IPC::Channel* channel_;