[FileBrowser] Added DefaultAction dialog to choose default action.

chrome/browser/chromeos/extensions/file_browser_private_api.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/chromeos/extensions/file_browser_private_api.h"
 
 #include <utility>
 
 #include "base/base64.h"
 #include "base/bind.h"
@@ skipping 614 matching lines @@
     return false;
 
   result_.reset(new base::FundamentalValue(true));
   return true;
 }
 
 void ExecuteTasksFileBrowserFunction::OnTaskExecuted(bool success) {
   SendResponse(success);
 }
 
+SetDefaultTaskFileBrowserFunction::SetDefaultTaskFileBrowserFunction() {}
+
+SetDefaultTaskFileBrowserFunction::~SetDefaultTaskFileBrowserFunction() {}
+
+bool SetDefaultTaskFileBrowserFunction::RunImpl() {
+  // First param is task id that was to the extension with setDefaultTask call.
+  std::string task_id;
+  if (!args_->GetString(0, &task_id) || !task_id.size())
+    return false;
+
+  BrowserThread::PostTask(
+        BrowserThread::UI, FROM_HERE,
+        base::Bind(
+            &file_handler_util::UpdateFileHandlerUsageStats,
+            profile_, task_id));
+
+  result_.reset(new base::FundamentalValue(true));
+  return true;
+}
+
 FileBrowserFunction::FileBrowserFunction() {
 }
 
 FileBrowserFunction::~FileBrowserFunction() {
 }
 
 int32 FileBrowserFunction::GetTabId() const {
   if (!dispatcher()) {
     LOG(WARNING) << "No dispatcher";
     return 0;
@@ skipping 1497 matching lines @@
   gdata::GDataSystemService* system_service =
       gdata::GDataSystemServiceFactory::GetForProfile(profile_);
   if (!system_service || !system_service->file_system())
     return false;
 
   FilePath directory_path = GetVirtualPathFromURL(GURL(file_url_as_string));
   system_service->file_system()->RequestDirectoryRefresh(directory_path);
 
   return true;
 }