Pass data saver pref value into embedded worker

chrome/browser/chrome_content_browser_client.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 "chrome/browser/chrome_content_browser_client.h"
 
 #include <map>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 1707 matching lines @@
     content::BrowserContext* context) {
   Profile* profile = Profile::FromBrowserContext(context);
   return profile->GetPrefs()->GetString(prefs::kAcceptLanguages);
 }
 
 const gfx::ImageSkia* ChromeContentBrowserClient::GetDefaultFavicon() {
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   return rb.GetNativeImageNamed(IDR_DEFAULT_FAVICON).ToImageSkia();
 }
 
+bool ChromeContentBrowserClient::IsDataSaverEnabled(
+    content::BrowserContext* browser_context) {
+  Profile* profile = Profile::FromBrowserContext(browser_context);
+  if (!profile)
+    return false;
+  PrefService* prefs = profile->GetPrefs();
+  return prefs && prefs->GetBoolean(prefs::kDataSaverEnabled);
+}
+
 bool ChromeContentBrowserClient::AllowAppCache(
     const GURL& manifest_url,
     const GURL& first_party,
     content::ResourceContext* context) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   ProfileIOData* io_data = ProfileIOData::FromResourceContext(context);
   return io_data->GetCookieSettings()->
       IsSettingCookieAllowed(manifest_url, first_party);
 }
 
@@ skipping 1205 matching lines @@
   if (channel <= kMaxDisableEncryptionChannel) {
     static const char* const kWebRtcDevSwitchNames[] = {
       switches::kDisableWebRtcEncryption,
     };
     to_command_line->CopySwitchesFrom(from_command_line,
                                       kWebRtcDevSwitchNames,
                                       arraysize(kWebRtcDevSwitchNames));
   }
 }
 #endif  // defined(ENABLE_WEBRTC)