Android: not to pause screen capture when Chrome is put to background

content/renderer/media/video_capture_impl_manager.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.
 
 #ifndef CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_
 #define CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
 #include "content/common/content_export.h"
+#include "content/common/media/media_stream_options.h"
 #include "content/common/media/video_capture.h"
 #include "content/public/renderer/media_stream_video_sink.h"
 #include "media/capture/video_capture_types.h"
 
 namespace content {
 
 class VideoCaptureImpl;
 
 // TODO(hclam): This class should be renamed to VideoCaptureService.
 
@@ skipping 54 matching lines @@
   // Get supported formats supported by the device for the given session
   // ID. |callback| will be called on the IO thread.
   void GetDeviceSupportedFormats(media::VideoCaptureSessionId id,
                                  const VideoCaptureDeviceFormatsCB& callback);
 
   // Get supported formats currently in use for the given session ID.
   // |callback| will be called on the IO thread.
   void GetDeviceFormatsInUse(media::VideoCaptureSessionId id,
                              const VideoCaptureDeviceFormatsCB& callback);
 
-  // Make all existing VideoCaptureImpl instances stop/resume delivering
-  // video frames to their clients, depends on flag |suspend|. This is called in
-  // response to a RenderView-wide PageHidden/Shown() event. To suspend/resume
-  // an individual session, please call Suspend(id) or Resume(id).
-  void SuspendDevices(bool suspend);
+  // Make all VideoCaptureImpl instances in the input |video_device_array|
+  // stop/resume delivering video frames to their clients, depends on flag
+  // |suspend|. This is called in response to a RenderView-wide
+  // PageHidden/Shown() event.
+  // To suspend/resume an individual session, please call Suspend(id) or
+  // Resume(id).
+  void SuspendDevices(const StreamDeviceInfoArray& video_device_array,
+                      bool suspend);
 
   virtual std::unique_ptr<VideoCaptureImpl> CreateVideoCaptureImplForTesting(
       media::VideoCaptureSessionId session_id) const;
 
  private:
   // Holds bookkeeping info for each VideoCaptureImpl shared by clients.
   struct DeviceEntry;
 
   void StopCapture(int client_id, media::VideoCaptureSessionId id);
   void UnrefDevice(media::VideoCaptureSessionId id);
@@ skipping 17 matching lines @@
   // Bound to the render thread.
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<VideoCaptureImplManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureImplManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_