Revert of Simplify BrowserContext by removing redundant methods.

chrome/browser/extensions/api/image_writer_private/operation_manager.cc

 // Copyright 2013 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/extensions/api/image_writer_private/operation_manager.h"
 
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/api/image_writer_private/destroy_partitions_operation.h"
 #include "chrome/browser/extensions/api/image_writer_private/error_messages.h"
 #include "chrome/browser/extensions/api/image_writer_private/operation.h"
 #include "chrome/browser/extensions/api/image_writer_private/write_from_file_operation.h"
 #include "chrome/browser/extensions/api/image_writer_private/write_from_url_operation.h"
 #include "chrome/browser/extensions/event_router_forwarder.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
-#include "content/public/browser/storage_partition.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/browser/extension_host.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/notification_types.h"
 
 namespace image_writer_api = extensions::api::image_writer_private;
 
 namespace extensions {
 namespace image_writer {
 
@@ skipping 40 matching lines @@
   // Chrome OS can only support a single operation at a time.
   if (operations_.size() > 0) {
 #else
   OperationMap::iterator existing_operation = operations_.find(extension_id);
 
   if (existing_operation != operations_.end()) {
 #endif
     return callback.Run(false, error::kOperationAlreadyInProgress);
   }
 
-  scoped_refptr<Operation> operation(new WriteFromUrlOperation(
-      weak_factory_.GetWeakPtr(),
-      extension_id,
-      content::BrowserContext::GetDefaultStoragePartition(browser_context_)->
-          GetURLRequestContext(),
-      url,
-      hash,
-      device_path));
+  scoped_refptr<Operation> operation(
+      new WriteFromUrlOperation(weak_factory_.GetWeakPtr(),
+                                extension_id,
+                                browser_context_->GetRequestContext(),
+                                url,
+                                hash,
+                                device_path));
   operations_[extension_id] = operation;
   BrowserThread::PostTask(BrowserThread::FILE,
                           FROM_HERE,
                           base::Bind(&Operation::Start, operation));
   callback.Run(true, "");
 }
 
 void OperationManager::StartWriteFromFile(
     const ExtensionId& extension_id,
     const base::FilePath& path,
@@ skipping 167 matching lines @@
     g_factory = LAZY_INSTANCE_INITIALIZER;
 
 BrowserContextKeyedAPIFactory<OperationManager>*
 OperationManager::GetFactoryInstance() {
   return g_factory.Pointer();
 }
 
 
 }  // namespace image_writer
 }  // namespace extensions