Make the page action space show extensions with active content scripts or

chrome/common/extensions/extension.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/common/extensions/extension.h"
 
 #include "base/base64.h"
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
@@ skipping 3474 matching lines @@
   // show packaged apps and platform apps because there are some pieces of
   // functionality that are only available in chrome://extensions/ but which
   // are needed for packaged and platform apps. For example, inspecting
   // background pages. See http://crbug.com/116134.
   if (is_hosted_app())
     return false;
 
   return true;
 }
 
+bool Extension::HasContentScriptAtURL(const GURL& url) const {
+  for (UserScriptList::const_iterator it = content_scripts_.begin();
+      it != content_scripts_.end(); ++it) {
+    if (it->MatchesURL(url))
+      return true;
+  }
+  return false;
+}
+
 bool Extension::CheckPlatformAppFeatures(std::string* utf8_error) {
   if (!is_platform_app())
     return true;
 
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnablePlatformApps)) {
     *utf8_error = errors::kPlatformAppFlagRequired;
     return false;
   }
 
@@ skipping 39 matching lines @@
     already_disabled(false),
     extension(extension) {}
 
 UpdatedExtensionPermissionsInfo::UpdatedExtensionPermissionsInfo(
     const Extension* extension,
     const ExtensionPermissionSet* permissions,
     Reason reason)
     : reason(reason),
       extension(extension),
       permissions(permissions) {}