Adds UMA histograms for desktop tab and audio capture through

content/browser/renderer_host/media/video_capture_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.
 
 #include "content/browser/renderer_host/media/video_capture_manager.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 477 matching lines @@
 
 scoped_ptr<media::VideoCaptureDevice>
 VideoCaptureManager::DoStartTabCaptureOnDeviceThread(
     const std::string& id,
     const media::VideoCaptureParams& params,
     scoped_ptr<media::VideoCaptureDevice::Client> device_client) {
   SCOPED_UMA_HISTOGRAM_TIMER("Media.VideoCaptureManager.StartDeviceTime");
   DCHECK(IsOnDeviceThread());
 
   scoped_ptr<media::VideoCaptureDevice> video_capture_device;
-  video_capture_device.reset(WebContentsVideoCaptureDevice::Create(id));
+  video_capture_device.reset(WebContentsVideoCaptureDevice::Create(
+      id, WebContentsVideoCaptureDevice::CHROME_TAB_CAPTURE));
 
   if (!video_capture_device) {
     device_client->OnError(FROM_HERE, "Could not create capture device");
     return nullptr;
   }
 
   video_capture_device->AllocateAndStart(params, std::move(device_client));
   return video_capture_device;
 }
 
 scoped_ptr<media::VideoCaptureDevice>
 VideoCaptureManager::DoStartDesktopCaptureOnDeviceThread(
     const std::string& id,
     const media::VideoCaptureParams& params,
     scoped_ptr<media::VideoCaptureDevice::Client> device_client) {
   SCOPED_UMA_HISTOGRAM_TIMER("Media.VideoCaptureManager.StartDeviceTime");
   DCHECK(IsOnDeviceThread());
 
   scoped_ptr<media::VideoCaptureDevice> video_capture_device;
 #if defined(ENABLE_SCREEN_CAPTURE)
   DesktopMediaID desktop_id = DesktopMediaID::Parse(id);
   if (desktop_id.is_null()) {
     device_client->OnError(FROM_HERE, "Desktop media ID is null");
     return nullptr;
   }
 
   if (desktop_id.type == DesktopMediaID::TYPE_WEB_CONTENTS) {
-    video_capture_device.reset(WebContentsVideoCaptureDevice::Create(id));
+    video_capture_device.reset(WebContentsVideoCaptureDevice::Create(
+        id, WebContentsVideoCaptureDevice::CHROME_CHOOSE_DESKTOP_MEDIA));
   } else {
 #if defined(USE_AURA)
     video_capture_device = DesktopCaptureDeviceAura::Create(desktop_id);
 #endif
     if (!video_capture_device)
       video_capture_device = DesktopCaptureDevice::Create(desktop_id);
   }
 #endif  // defined(ENABLE_SCREEN_CAPTURE)
 
   if (!video_capture_device) {
@@ skipping 438 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTaskAndReply(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&AVFoundationGlue::InitializeAVFoundation),
       base::Bind(&VideoCaptureManager::OnDeviceLayerInitialized, this,
                  and_then));
 }
 #endif
 
 }  // namespace content