Move chrome.fileSystem implementation to //extensions

chrome/browser/extensions/api/chrome_extensions_api_client.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 "chrome/browser/extensions/api/chrome_extensions_api_client.h"
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/memory/ptr_util.h"
 #include "build/build_config.h"
 #include "chrome/browser/data_use_measurement/data_use_web_contents_observer.h"
 #include "chrome/browser/extensions/api/chrome_device_permissions_prompt.h"
 #include "chrome/browser/extensions/api/declarative_content/chrome_content_rules_registry.h"
 #include "chrome/browser/extensions/api/declarative_content/default_content_predicate_evaluators.h"
+#include "chrome/browser/extensions/api/file_system/chrome_file_system_delegate.h"
 #include "chrome/browser/extensions/api/management/chrome_management_api_delegate.h"
 #include "chrome/browser/extensions/api/metrics_private/chrome_metrics_private_delegate.h"
 #include "chrome/browser/extensions/api/networking_cast_private/chrome_networking_cast_private_delegate.h"
 #include "chrome/browser/extensions/api/storage/managed_value_store_cache.h"
 #include "chrome/browser/extensions/api/storage/sync_value_store_cache.h"
 #include "chrome/browser/extensions/api/web_request/chrome_extension_web_request_event_router_delegate.h"
 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
 #include "chrome/browser/favicon/favicon_utils.h"
 #include "chrome/browser/guest_view/app_view/chrome_app_view_guest_delegate.h"
 #include "chrome/browser/guest_view/chrome_guest_view_manager_delegate.h"
@@ skipping 147 matching lines @@
 NetworkingCastPrivateDelegate*
 ChromeExtensionsAPIClient::GetNetworkingCastPrivateDelegate() {
 #if defined(OS_CHROMEOS) || defined(OS_WIN) || defined(OS_MACOSX)
   if (!networking_cast_private_delegate_)
     networking_cast_private_delegate_ =
         ChromeNetworkingCastPrivateDelegate::Create();
 #endif
   return networking_cast_private_delegate_.get();
 }
 
+FileSystemDelegate* ChromeExtensionsAPIClient::GetFileSystemDelegate() {
+  if (!file_system_delegate_)
+    file_system_delegate_ = base::MakeUnique<ChromeFileSystemDelegate>();
+  return file_system_delegate_.get();
+}
+
 #if defined(OS_CHROMEOS)
 NonNativeFileSystemDelegate*
 ChromeExtensionsAPIClient::GetNonNativeFileSystemDelegate() {
   if (!non_native_file_system_delegate_) {
     non_native_file_system_delegate_ =
         base::MakeUnique<NonNativeFileSystemDelegateChromeOS>();
   }
   return non_native_file_system_delegate_.get();
 }
 
 void ChromeExtensionsAPIClient::SaveImageDataToClipboard(
     const std::vector<char>& image_data,
     api::clipboard::ImageType type,
     AdditionalDataItemList additional_items,
     const base::Closure& success_callback,
     const base::Callback<void(const std::string&)>& error_callback) {
   if (!clipboard_extension_helper_)
     clipboard_extension_helper_ = base::MakeUnique<ClipboardExtensionHelper>();
   clipboard_extension_helper_->DecodeAndSaveImageData(
       image_data, type, std::move(additional_items), success_callback,
       error_callback);
 }
 #endif
 
 }  // namespace extensions