Image Capture Mac: make setOptions() resolve the callback with true

media/capture/video/mac/video_capture_device_mac.mm

 // 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 "media/capture/video/mac/video_capture_device_mac.h"
 
 #include <IOKit/IOCFPlugIn.h>
 #include <IOKit/usb/IOUSBLib.h>
 #include <IOKit/usb/USBSpec.h>
 #include <stddef.h>
@@ skipping 395 matching lines @@
       capture_format_.frame_size.height(), capture_format_.frame_size.height(),
       capture_format_.frame_size.height(), 0 /* step */);
   photo_capabilities->width = mojom::Range::New(
       capture_format_.frame_size.width(), capture_format_.frame_size.width(),
       capture_format_.frame_size.width(), 0 /* step */);
   photo_capabilities->torch = false;
 
   callback.Run(std::move(photo_capabilities));
 }
 
+void VideoCaptureDeviceMac::SetPhotoOptions(mojom::PhotoSettingsPtr settings,
+                                            SetPhotoOptionsCallback callback) {
+  DCHECK(task_runner_->BelongsToCurrentThread());
+  // Drop |callback| and return if there are any unsupported |settings|.
+  // TODO(mcasas): centralise checks elsewhere, https://crbug.com/724285.
+  if ((settings->has_width &&
+       settings->width != capture_format_.frame_size.width()) ||
+      (settings->has_height &&
+       settings->height != capture_format_.frame_size.height()) ||
+      settings->has_fill_light_mode || settings->has_red_eye_reduction) {
+    return;
+  }
+  callback.Run(true);
+}
+
 bool VideoCaptureDeviceMac::Init(VideoCaptureApi capture_api_type) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(state_, kNotInitialized);
 
   if (capture_api_type != VideoCaptureApi::MACOSX_AVFOUNDATION)
     return false;
 
   capture_device_.reset(
       [[VideoCaptureDeviceAVFoundation alloc] initWithFrameReceiver:this]);
 
@@ skipping 92 matching lines @@
   if (![capture_device_ setCaptureHeight:capture_format_.frame_size.height()
                                    width:capture_format_.frame_size.width()
                                frameRate:capture_format_.frame_rate]) {
     ReceiveError(FROM_HERE, "Could not configure capture device.");
     return false;
   }
   return true;
 }
 
 }  // namespace media