Revert of Simplify BrowserContext by removing redundant methods.

chromecast/browser/cast_browser_main_parts.cc

Index: chromecast/browser/cast_browser_main_parts.cc
diff --git a/chromecast/browser/cast_browser_main_parts.cc b/chromecast/browser/cast_browser_main_parts.cc
index 6bc4ecd79c4db8ffad5b3f2c0ca187168a18cd1e..f07ca2628502032e30290bebf1fc2294292bfd99 100644
--- a/chromecast/browser/cast_browser_main_parts.cc
+++ b/chromecast/browser/cast_browser_main_parts.cc
@@ -50,7 +50,6 @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/gpu_data_manager.h"
-#include "content/public/browser/storage_partition.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
 #include "media/audio/audio_manager.h"
@@ -401,9 +400,7 @@
       metrics::CastMetricsServiceClient::Create(
           content::BrowserThread::GetBlockingPool(),
           cast_browser_process_->pref_service(),
-          content::BrowserContext::GetDefaultStoragePartition(
-              cast_browser_process_->browser_context())->
-                  GetURLRequestContext()));
+          cast_browser_process_->browser_context()->GetRequestContext()));
 
   if (!PlatformClientAuth::Initialize())
     LOG(ERROR) << "PlatformClientAuth::Initialize failed.";