Fix up unused includes from chrome/browser/extensions to the rest of chrome/browser.

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 81 matching lines @@
   return url;
 }
 
 // Must be executed on the FILE thread.
 void GetDownloadFilePath(
     const base::FilePath& download_directory, const std::string& id,
     const base::Callback<void(const base::FilePath&)>& callback) {
   base::FilePath directory(g_download_directory_for_tests ?
                      *g_download_directory_for_tests : download_directory);
 
-#if defined (OS_CHROMEOS)
+#if defined(OS_CHROMEOS)
   // Do not use drive for extension downloads.
   if (drive::util::IsUnderDriveMountPoint(directory))
     directory = download_util::GetDefaultDownloadDirectory();
 #endif
 
   // Ensure the download directory exists. TODO(asargent) - make this use
   // common code from the downloads system.
   if (!file_util::DirectoryExists(directory)) {
     if (!file_util::CreateDirectory(directory)) {
       BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
@@ skipping 136 matching lines @@
       break;
     }
 
     case chrome::NOTIFICATION_EXTENSION_INSTALL_ERROR: {
       CrxInstaller* crx_installer = content::Source<CrxInstaller>(source).ptr();
       CHECK(crx_installer);
       if (!profile_->IsSameProfile(crx_installer->profile()))
         return;
 
       // TODO(rdevlin.cronin): Continue removing std::string errors and
-      // replacing with string16
+      // replacing with string16. See crbug.com/71980.
       const string16* error = content::Details<const string16>(details).ptr();
       const std::string utf8_error = UTF16ToUTF8(*error);
       if (download_url_ == crx_installer->original_download_url())
         ReportFailure(utf8_error, FAILURE_REASON_OTHER);
       break;
     }
 
     default:
       NOTREACHED();
   }
@@ skipping 150 matching lines @@
 void WebstoreInstaller::ReportSuccess() {
   if (delegate_) {
     delegate_->OnExtensionInstallSuccess(id_);
     delegate_ = NULL;
   }
 
   Release();  // Balanced in Start().
 }
 
 }  // namespace extensions