Add functionality to get default media device IDs from user preferences.

chrome/browser/ui/browser.cc

 // Copyright 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 "chrome/browser/ui/browser.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 1806 matching lines @@
     const content::MediaResponseCallback& callback) {
   ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
 }
 
 bool Browser::CheckMediaAccessPermission(content::WebContents* web_contents,
                                          const GURL& security_origin,
                                          content::MediaStreamType type) {
   return ::CheckMediaAccessPermission(web_contents, security_origin, type);
 }
 
+std::string Browser::GetDefaultMediaDeviceId(content::WebContents* web_contents,
+                                             content::MediaStreamType type) {
+  return ::GetDefaultMediaDeviceId(web_contents, type);
+}
+
 bool Browser::RequestPpapiBrokerPermission(
     WebContents* web_contents,
     const GURL& url,
     const base::FilePath& plugin_path,
     const base::Callback<void(bool)>& callback) {
   PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
   return true;
 }
 
 gfx::Size Browser::GetSizeForNewRenderView(WebContents* web_contents) const {
@@ skipping 743 matching lines @@
     // new window later, thus we need to navigate the window now.
     if (contents) {
       contents->web_contents()->GetController().LoadURL(
           target_url, content::Referrer(), ui::PAGE_TRANSITION_LINK,
           std::string());  // No extra headers.
     }
   }
 
   return contents != NULL;
 }