Fix TODO comments for the mac media capture part

media/video/capture/mac/video_capture_device_qtkit_mac.mm

 // Copyright (c) 2011 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.
 
 #import "media/video/capture/mac/video_capture_device_qtkit_mac.h"
 
 #import <QTKit/QTKit.h>
 
 #include "base/logging.h"
 #include "media/video/capture/mac/video_capture_device_mac.h"
 #include "media/video/capture/video_capture_device.h"
 
 @implementation VideoCaptureDeviceQTKit
 
 #pragma mark Class methods
 
-+ (NSArray *)deviceNames {
-  return [QTCaptureDevice inputDevicesWithMediaType:QTMediaTypeVideo];
++ (NSDictionary *)deviceNames {
+  NSArray *captureDevices =
+      [QTCaptureDevice inputDevicesWithMediaType:QTMediaTypeVideo];
+  NSMutableDictionary *deviceNames =
+      [[[NSMutableDictionary alloc] init] autorelease];
+
+  for (QTCaptureDevice* device in captureDevices) {
+    NSString* qtDeviceName = [device localizedDisplayName];
+    NSString* qtUniqueId = [device uniqueID];
+    [deviceNames setObject:qtDeviceName forKey:qtUniqueId];
+  }
+  return deviceNames;
 }
 
 #pragma mark Public methods
 
 - (id)initWithFrameReceiver:(media::VideoCaptureDeviceMac *)frameReceiver {
   self = [super init];
   if (self) {
     frameReceiver_ = frameReceiver;
   }
   return self;
@@ skipping 138 matching lines @@
 
     // Deliver the captured video frame.
     frameReceiver_->ReceiveFrame(static_cast<UInt8*>(baseAddress), frameSize,
                                  captureCapability);
 
     CVPixelBufferUnlockBaseAddress(videoFrame, kLockFlags);
   }
 }
 
 @end