Add video frame refresh to MediaStream and VideoCapture stacks.

content/common/media/video_capture_messages.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.
 
 #include "base/memory/shared_memory.h"
 #include "content/common/content_export.h"
 #include "content/common/media/video_capture.h"
 #include "content/public/common/common_param_traits.h"
 #include "ipc/ipc_message_macros.h"
 #include "media/base/video_capture_types.h"
@@ skipping 90 matching lines @@
 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Pause,
                      int /* device_id */)
 
 // Resume the video capture specified by |device_id|, |session_id| and
 // |params|.
 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_Resume,
                      int, /* device_id */
                      media::VideoCaptureSessionId, /* session_id */
                      media::VideoCaptureParams /* params */)
 
+// Requests that the video capturer send a frame "soon" (e.g., to resolve
+// picture loss or quality issues).
+IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_RequestRefreshFrame,
+                     int /* device_id */);
+
 // Close the video capture specified by |device_id|.
 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Stop,
                      int /* device_id */)
 
 // Tell the browser process that the renderer has finished reading from
 // a buffer previously delivered by VideoCaptureMsg_BufferReady.
 IPC_MESSAGE_CONTROL4(VideoCaptureHostMsg_BufferReady,
                      int /* device_id */,
                      int /* buffer_id */,
                      gpu::SyncToken /* sync_token */,
                      double /* consumer_resource_utilization */)
 
 // Get the formats supported by a device referenced by |capture_session_id|.
 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceSupportedFormats,
                      int /* device_id */,
                      media::VideoCaptureSessionId /* session_id */)
 
 // Get the format(s) in use by a device referenced by |capture_session_id|.
 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceFormatsInUse,
                      int /* device_id */,
                      media::VideoCaptureSessionId /* session_id */)