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

BUG=298789
R=satorux@chromium.org, yoshiki@chromium.org

Review URL: https://codereview.chromium.org/59083013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233445 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/chromeos/drive_internals.html

@@ -33,6 +33,12 @@
     </ul>
 
     <h2 id='local-metadata-section'>Local Metadata</h2>
+    <div>
+      <button id='button-reload-drive-filesystem'>
+        Clear local data and reload
+      </button>
+      <span id='reload-status-text'></span>
+    </div>
     <ul>
       <li>Local Changestamp:
         <span id='account-largest-changestamp-local'></span>

chrome/browser/resources/chromeos/drive_internals.js

@@ -251,6 +251,14 @@ function updateKeyValueList(ul, list) {
   }
 }
 
+/**
+ * Updates the text next to the 'reload' button to update the status.
+ * @param {boolean} success whether or not reloading has succeeded.
+ */
+function updateReloadStatus(success) {
+  $('reload-status-text').textContent = (success ? 'success' : 'failed');
+}
+
 document.addEventListener('DOMContentLoaded', function() {
   chrome.send('pageLoaded');
 
@@ -274,6 +282,11 @@ document.addEventListener('DOMContentLoaded', function() {
     chrome.send('clearRefreshToken');
   });
 
+  $('button-reload-drive-filesystem').addEventListener('click', function() {
+    $('reload-status-text').textContent = 'reloading...';
+    chrome.send('reloadDriveFileSystem');
+  });
+
   $('button-show-file-entries').addEventListener('click', function() {
     var button = $('button-show-file-entries');
     button.parentNode.removeChild(button);

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

@@ -286,11 +286,15 @@ class DriveInternalsWebUIHandler : public content::WebUIMessageHandler {
   // 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);
 
+  // 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_;
 
@@ -369,6 +373,10 @@ void DriveInternalsWebUIHandler::RegisterMessages() {
       "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,
@@ -559,6 +567,26 @@ void DriveInternalsWebUIHandler::ClearRefreshToken(
     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));