Move PathIsWritable, DirectoryExists, ContentsEqual, and TextContentsEqual to the base namespace.

chrome/browser/extensions/platform_app_launcher.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/extensions/platform_app_launcher.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 129 matching lines @@
  private:
   friend class base::RefCountedThreadSafe<PlatformAppPathLauncher>;
 
   virtual ~PlatformAppPathLauncher() {}
 
   void GetMimeTypeAndLaunch() {
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 
     // If the file doesn't exist, or is a directory, launch with no launch data.
     if (!base::PathExists(file_path_) ||
-        file_util::DirectoryExists(file_path_)) {
+        base::DirectoryExists(file_path_)) {
       LOG(WARNING) << "No file exists with path " << file_path_.value();
       BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind(
               &PlatformAppPathLauncher::LaunchWithNoLaunchData, this));
       return;
     }
 
     std::string mime_type;
     if (!net::GetMimeTypeFromFile(file_path_, &mime_type))
       mime_type = kFallbackMimeType;
 
@@ skipping 185 matching lines @@
   bool had_windows = extension_prefs->IsActive(extension->id());
   extension_prefs->SetIsActive(extension->id(), false);
   bool listening_to_launch = event_router->
       ExtensionHasEventListener(extension->id(), event_names::kOnLaunched);
 
   if (listening_to_launch && had_windows)
     LaunchPlatformAppWithNoData(profile, extension);
 }
 
 }  // namespace extensions