Extend --load-extension commandline to accept multiple (comma-separated) extensions.

chrome/browser/profiles/profile_impl.cc

 // Copyright (c) 2011 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/profiles/profile_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/environment.h"
@@ skipping 445 matching lines @@
       extension_service_->component_loader()->AddOrReplace(
           FilePath(t.token()));
     }
   }
   extension_service_->Init();
 
   if (extensions_enabled) {
     // Load any extensions specified with --load-extension.
     // TODO(yoz): Seems like this should move into ExtensionService::Init.
     if (command_line->HasSwitch(switches::kLoadExtension)) {
-      FilePath path = command_line->GetSwitchValuePath(
+      CommandLine::StringType path_list = command_line->GetSwitchValueNative(
           switches::kLoadExtension);
-      extensions::UnpackedInstaller::Create(extension_service_.get())->
-        LoadFromCommandLine(path);
+      StringTokenizerT<CommandLine::StringType,
+          CommandLine::StringType::const_iterator> t(path_list,
+                                                     FILE_PATH_LITERAL(","));
+      scoped_refptr<extensions::UnpackedInstaller> installer =
+          extensions::UnpackedInstaller::Create(extension_service_.get());
+      while (t.GetNext()) {
+        installer->LoadFromCommandLine(FilePath(t.token()));
+      }
     }
   }
 
   // Make the chrome://extension-icon/ resource available.
   GetChromeURLDataManager()->AddDataSource(new ExtensionIconSource(this));
 
   // Initialize extension event routers. Note that on Chrome OS, this will
   // not succeed if the user has not logged in yet, in which case the
   // event routers are initialized in LoginUtilsImpl::CompleteLogin instead.
   // The InitEventRouters call used to be in BrowserMain, because when bookmark
@@ skipping 1156 matching lines @@
                                      FilePath* cache_path,
                                      int* max_size) {
   DCHECK(cache_path);
   DCHECK(max_size);
   FilePath path(prefs_->GetFilePath(prefs::kDiskCacheDir));
   if (!path.empty())
     *cache_path = path;
   *max_size = is_media_context ? prefs_->GetInteger(prefs::kMediaCacheSize) :
                                  prefs_->GetInteger(prefs::kDiskCacheSize);
 }