Simplify BrowserContext by removing redundant methods.

extensions/shell/browser/api/identity/identity_api.cc

 // Copyright 2014 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 "extensions/shell/browser/api/identity/identity_api.h"
 
 #include <set>
 #include <string>
 
 #include "base/guid.h"
 #include "content/public/browser/browser_context.h"
+#include "content/public/browser/storage_partition.h"
 #include "extensions/common/manifest_handlers/oauth2_manifest_handler.h"
 #include "extensions/shell/browser/shell_oauth2_token_service.h"
 #include "extensions/shell/common/api/identity.h"
 #include "google_apis/gaia/gaia_auth_util.h"
 
 namespace extensions {
 namespace shell {
 
 namespace {
 const char kIdentityApiId[] = "identity_api";
@@ skipping 80 matching lines @@
         this,
         OAuth2MintTokenFlow::Parameters(
             extension()->id(),
             oauth2_info.client_id,
             oauth2_info.scopes,
             IdentityAPI::Get(browser_context())->device_id(),
             OAuth2MintTokenFlow::MODE_MINT_TOKEN_FORCE)));
   }
 
   // Use the logging-in-user access token to mint an access token for this app.
-  mint_token_flow_->Start(browser_context()->GetRequestContext(), access_token);
+  mint_token_flow_->Start(
+      content::BrowserContext::GetDefaultStoragePartition(browser_context())->
+          GetURLRequestContext(),
+      access_token);
 }
 
 void IdentityGetAuthTokenFunction::OnGetTokenFailure(
     const OAuth2TokenService::Request* request,
     const GoogleServiceAuthError& error) {
   Respond(Error(error.ToString()));
   Release();  // Balanced in Run().
 }
 
 void IdentityGetAuthTokenFunction::OnMintTokenSuccess(
@@ skipping 28 matching lines @@
   scoped_ptr<api::identity::RemoveCachedAuthToken::Params> params(
       api::identity::RemoveCachedAuthToken::Params::Create(*args_));
   EXTENSION_FUNCTION_VALIDATE(params.get());
   // This stub identity API does not maintain a token cache, so there is nothing
   // to remove.
   return RespondNow(NoArguments());
 }
 
 }  // namespace shell
 }  // namespace extensions