Add 'Clear local data and reload' button in chrome:drive-internals.

chrome/browser/ui/webui/chromeos/drive_internals_ui.cc

 // Copyright (c) 2012 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/ui/webui/chromeos/drive_internals_ui.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
@@ skipping 268 matching lines @@
   void OnGetFilesystemMetadataForLocal(
       const drive::FileSystemMetadata& metadata);
 
   // Callback for DebugInfoCollector::GetMetadata for delta update.
   void OnGetFilesystemMetadataForDeltaUpdate(
       const drive::FileSystemMetadata& metadata);
 
   // Called when the page requests periodic update.
   void OnPeriodicUpdate(const base::ListValue* args);
 
+  // Called when the corresponding button on the page is pressed.
   void ClearAccessToken(const base::ListValue* args);
   void ClearRefreshToken(const base::ListValue* args);
+  void ReloadDriveFileSystem(const base::ListValue* args);
+  void ListFileEntries(const base::ListValue* args);
 
-  void ListFileEntries(const base::ListValue* args);
+  // Called after file system reload for ReloadDriveFileSystem is done.
+  void ReloadFinished(bool success);
 
   // The last event sent to the JavaScript side.
   int last_sent_event_id_;
 
   base::WeakPtrFactory<DriveInternalsWebUIHandler> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(DriveInternalsWebUIHandler);
 };
 
 void DriveInternalsWebUIHandler::OnGetAboutResource(
     google_apis::GDataErrorCode status,
@@ skipping 60 matching lines @@
                  weak_ptr_factory_.GetWeakPtr()));
   web_ui()->RegisterMessageCallback(
       "clearAccessToken",
       base::Bind(&DriveInternalsWebUIHandler::ClearAccessToken,
                  weak_ptr_factory_.GetWeakPtr()));
   web_ui()->RegisterMessageCallback(
       "clearRefreshToken",
       base::Bind(&DriveInternalsWebUIHandler::ClearRefreshToken,
                  weak_ptr_factory_.GetWeakPtr()));
   web_ui()->RegisterMessageCallback(
+      "reloadDriveFileSystem",
+      base::Bind(&DriveInternalsWebUIHandler::ReloadDriveFileSystem,
+                 weak_ptr_factory_.GetWeakPtr()));
+  web_ui()->RegisterMessageCallback(
       "listFileEntries",
       base::Bind(&DriveInternalsWebUIHandler::ListFileEntries,
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
 drive::DriveIntegrationService*
 DriveInternalsWebUIHandler::GetIntegrationService() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   Profile* profile = Profile::FromWebUI(web_ui());
@@ skipping 169 matching lines @@
 
 void DriveInternalsWebUIHandler::ClearRefreshToken(
     const base::ListValue* args) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   drive::DriveServiceInterface* drive_service = GetDriveService();
   if (drive_service)
     drive_service->ClearRefreshToken();
 }
 
+void DriveInternalsWebUIHandler::ReloadDriveFileSystem(
+    const base::ListValue* args) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  drive::DriveIntegrationService* integration_service =
+      GetIntegrationService();
+  if (integration_service) {
+    integration_service->ClearCacheAndRemountFileSystem(
+        base::Bind(&DriveInternalsWebUIHandler::ReloadFinished,
+                   weak_ptr_factory_.GetWeakPtr()));
+  }
+}
+
+void DriveInternalsWebUIHandler::ReloadFinished(bool success) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  web_ui()->CallJavascriptFunction("updateReloadStatus",
+                                   base::FundamentalValue(success));
+}
+
 void DriveInternalsWebUIHandler::ListFileEntries(const base::ListValue* args) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   UpdateFileSystemContentsSection();
 }
 
 void DriveInternalsWebUIHandler::UpdateDeltaUpdateStatusSection(
     drive::DebugInfoCollector* debug_info_collector) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(debug_info_collector);
@@ skipping 265 matching lines @@
       content::WebUIDataSource::Create(chrome::kChromeUIDriveInternalsHost);
   source->AddResourcePath("drive_internals.css", IDR_DRIVE_INTERNALS_CSS);
   source->AddResourcePath("drive_internals.js", IDR_DRIVE_INTERNALS_JS);
   source->SetDefaultResource(IDR_DRIVE_INTERNALS_HTML);
 
   Profile* profile = Profile::FromWebUI(web_ui);
   content::WebUIDataSource::Add(profile, source);
 }
 
 }  // namespace chromeos