Simplify BrowserContext by removing redundant methods.

android_webview/browser/net/token_binding_manager.cc

Index: android_webview/browser/net/token_binding_manager.cc
diff --git a/android_webview/browser/net/token_binding_manager.cc b/android_webview/browser/net/token_binding_manager.cc
index 7ec0292056b39f570fb1b55231ca8e39c506f503..01b1e3c86eedb088e9e15cc925565ac1f314a6e6 100644
--- a/android_webview/browser/net/token_binding_manager.cc
+++ b/android_webview/browser/net/token_binding_manager.cc
@@ -6,6 +6,7 @@
 
 #include "android_webview/browser/aw_browser_context.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/storage_partition.h"
 #include "net/ssl/channel_id_service.h"
 #include "net/ssl/channel_id_store.h"
 #include "net/url_request/url_request_context.h"
@@ -84,7 +85,8 @@ TokenBindingManager::TokenBindingManager() : enabled_(false) {}
 void TokenBindingManager::GetKey(const std::string& host,
                                  KeyReadyCallback callback) {
   scoped_refptr<net::URLRequestContextGetter> context_getter =
-      AwBrowserContext::GetDefault()->GetRequestContext();
+      content::BrowserContext::GetDefaultStoragePartition(
+          AwBrowserContext::GetDefault())->GetURLRequestContext();
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&GetKeyImpl, host, callback, context_getter));
@@ -93,7 +95,8 @@ void TokenBindingManager::GetKey(const std::string& host,
 void TokenBindingManager::DeleteKey(const std::string& host,
                                     DeletionCompleteCallback callback) {
   scoped_refptr<net::URLRequestContextGetter> context_getter =
-      AwBrowserContext::GetDefault()->GetRequestContext();
+      content::BrowserContext::GetDefaultStoragePartition(
+          AwBrowserContext::GetDefault())->GetURLRequestContext();
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&DeleteKeyImpl, host, callback, context_getter, false));
@@ -101,7 +104,8 @@ void TokenBindingManager::DeleteKey(const std::string& host,
 
 void TokenBindingManager::DeleteAllKeys(DeletionCompleteCallback callback) {
   scoped_refptr<net::URLRequestContextGetter> context_getter =
-      AwBrowserContext::GetDefault()->GetRequestContext();
+      content::BrowserContext::GetDefaultStoragePartition(
+          AwBrowserContext::GetDefault())->GetURLRequestContext();
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&DeleteKeyImpl, "", callback, context_getter, true));