GTK: hook up drag and drop of browser actions (for reordering)....

chrome/browser/extensions/extensions_service.cc

 // Copyright (c) 2009 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/extensions_service.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/histogram.h"
 #include "base/string_util.h"
@@ skipping 258 matching lines @@
 
   ExtensionDOMUI::RegisterChromeURLOverrides(profile_,
       extension->GetChromeURLOverrides());
 
   NotifyExtensionLoaded(extension);
   UpdateActiveExtensionsInCrashReporter();
 }
 
 void ExtensionsService::DisableExtension(const std::string& extension_id) {
   Extension* extension = GetExtensionByIdInternal(extension_id, true, false);
-  if (!extension) {
-    NOTREACHED() << "Trying to disable an extension that isn't enabled.";
+  // The extension may have been disabled already.
+  if (!extension)
     return;
-  }
 
   // Remember that we disabled it, unless it's temporary.
   if (extension->location() != Extension::LOAD)
     extension_prefs_->SetExtensionState(extension, Extension::DISABLED);
 
   // Move it over to the disabled list.
   disabled_extensions_.push_back(extension);
   ExtensionList::iterator iter = std::find(extensions_.begin(),
                                            extensions_.end(),
                                            extension);
@@ skipping 711 matching lines @@
 
 void ExtensionsServiceBackend::OnExternalExtensionFound(
     const std::string& id, const Version* version, const FilePath& path,
     Extension::Location location) {
   ChromeThread::PostTask(
       ChromeThread::UI, FROM_HERE,
       NewRunnableMethod(
           frontend_, &ExtensionsService::OnExternalExtensionFound, id,
           version->GetString(), path, location));
 }