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

content/renderer/media/video_capture_impl_manager.cc

 // 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.
 //
 // Implementation notes about interactions with VideoCaptureImpl.
 //
 // How is VideoCaptureImpl used:
 //
 // VideoCaptureImpl is an IO thread object while VideoCaptureImplManager
 // lives only on the render thread. It is only possible to access an
@@ skipping 216 matching lines @@
   DCHECK(it != devices_.end());
   DCHECK_GT(it->client_count, 0);
   --it->client_count;
   if (it->client_count > 0)
     return;
   ChildProcess::current()->io_task_runner()->DeleteSoon(FROM_HERE,
                                                         it->impl.release());
   devices_.erase(it);
 }
 
-void VideoCaptureImplManager::SuspendDevices(bool suspend) {
+void VideoCaptureImplManager::SuspendDevices(
+    const StreamDeviceInfoArray& video_device_array,
+    bool suspend) {
   DCHECK(render_main_task_runner_->BelongsToCurrentThread());
   if (is_suspending_all_ == suspend)
     return;
   is_suspending_all_ = suspend;
-  for (auto& entry : devices_) {
-    if (entry.is_individually_suspended)
+  for (const StreamDeviceInfo& device_info : video_device_array) {
+    const media::VideoCaptureSessionId id = device_info.session_id;
+    const auto it = std::find_if(
+        devices_.begin(), devices_.end(),
+        [id](const DeviceEntry& entry) { return entry.session_id == id; });
+    DCHECK(it != devices_.end());
+    if (it->is_individually_suspended)
       continue;  // Either: 1) Already suspended; or 2) Should not be resumed.
     ChildProcess::current()->io_task_runner()->PostTask(
         FROM_HERE, base::Bind(&VideoCaptureImpl::SuspendCapture,
-                              base::Unretained(entry.impl.get()), suspend));
+                              base::Unretained(it->impl.get()), suspend));
   }
 }
 
 }  // namespace content