Revert of ImageCapture: Queue up requests while device not ready

content/browser/renderer_host/media/video_capture_manager.h

Index: content/browser/renderer_host/media/video_capture_manager.h
diff --git a/content/browser/renderer_host/media/video_capture_manager.h b/content/browser/renderer_host/media/video_capture_manager.h
index e2db303556c0c6f284ae6eb532ba3c7aa3e927a7..20be47fc6978e4da627e0388d2ce9385dac02cd3 100644
--- a/content/browser/renderer_host/media/video_capture_manager.h
+++ b/content/browser/renderer_host/media/video_capture_manager.h
@@ -165,7 +165,6 @@
                        VideoCaptureDevice::SetPhotoOptionsCallback callback);
   void TakePhoto(int session_id,
                  VideoCaptureDevice::TakePhotoCallback callback);
-
 #if defined(OS_ANDROID)
   // Some devices had troubles when stopped and restarted quickly, so the device
   // is only stopped when Chrome is sent to background and not when, e.g., a tab
@@ -212,10 +211,13 @@
   // may be freed by this function.
   void DestroyDeviceEntryIfNoClients(DeviceEntry* entry);
 
-  // Finds a DeviceEntry in different ways: by |session_id|, by its |device_id|
-  // and |type| (if it is already opened), by its |controller| or by its
-  // |serial_id|. In all cases, if not found, nullptr is returned.
-  DeviceEntry* GetDeviceEntryBySessionId(int session_id);
+  // Retrieve the VideoCaptureDevice associated to |session_id|, or nullptr
+  // if not found.
+  VideoCaptureDevice* GetVideoCaptureDeviceBySessionId(int session_id);
+
+  // Finds a DeviceEntry in different ways: by its |device_id| and |type| (if it
+  // is already opened), by its |controller| or by its |serial_id|. In all
+  // cases, if not found, nullptr is returned.
   DeviceEntry* GetDeviceEntryByTypeAndId(MediaStreamType type,
                                          const std::string& device_id) const;
   DeviceEntry* GetDeviceEntryByController(
@@ -273,17 +275,6 @@
       media::VideoCaptureDevice* device,
       gfx::NativeViewId window_id);
 
-  // Internal versions of the Image Capture public ones, for delayed execution.
-  void DoGetPhotoCapabilities(
-      VideoCaptureDevice::GetPhotoCapabilitiesCallback callback,
-      VideoCaptureDevice* device);
-  void DoSetPhotoOptions(
-      VideoCaptureDevice::SetPhotoOptionsCallback callback,
-      media::mojom::PhotoSettingsPtr settings,
-      VideoCaptureDevice* device);
-  void DoTakePhoto(VideoCaptureDevice::TakePhotoCallback callback,
-                   VideoCaptureDevice* device);
-
 #if defined(OS_MACOSX)
   // Called on the IO thread after the device layer has been initialized on Mac.
   // Sets |capture_device_api_initialized_| to true and then executes and_then.
@@ -332,11 +323,6 @@
   DeviceEntries devices_;
 
   DeviceStartQueue device_start_queue_;
-
-  // Queue to keep photo-associated requests waiting for a device to initialize,
-  // bundles a session id integer and an associated photo-related request.
-  std::list<std::pair<int, base::Callback<void(media::VideoCaptureDevice*)>>>
-      photo_request_queue_;
 
   // Device creation factory injected on construction from MediaStreamManager or
   // from the test harness.