Move common file path related methods between chrome & content to file_util. I reduced the 4 meth...

chrome/browser/extensions/webstore_installer.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/webstore_installer.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 84 matching lines @@
 
   // This is to help avoid a race condition between when we generate this
   // filename and when the download starts writing to it (think concurrently
   // running sharded browser tests installing the same test file, for
   // instance).
   std::string random_number =
       base::Uint64ToString(base::RandGenerator(kuint16max));
 
   FilePath file = directory.AppendASCII(id + "_" + random_number + ".crx");
 
-  int uniquifier = DownloadFile::GetUniquePathNumber(file);
+  int uniquifier = file_util::GetUniquePathNumber(file, FILE_PATH_LITERAL(""));
   if (uniquifier > 0)
-    DownloadFile::AppendNumberToPath(&file, uniquifier);
+    file_util::AppendNumberToPath(&file, uniquifier);
 
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                           base::Bind(callback, file));
 }
 
 }  // namespace
 
 
 WebstoreInstaller::WebstoreInstaller(Profile* profile,
                                      Delegate* delegate,
@@ skipping 108 matching lines @@
 
   Release();  // Balanced in Start().
 }
 
 void WebstoreInstaller::ReportSuccess() {
   if (delegate_)
     delegate_->OnExtensionInstallSuccess(id_);
 
   Release();  // Balanced in Start().
 }