Show an extension info bubble when a script badge is clicked.

chrome/browser/extensions/extension_process_manager.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 "base/bind.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/string_number_conversions.h"
@@ skipping 202 matching lines @@
   host->CreateView(browser);
   OnExtensionHostCreated(host, false);
   return host;
 }
 
 ExtensionHost* ExtensionProcessManager::CreateViewHost(
     const GURL& url, Browser* browser, chrome::ViewType view_type) {
   EnsureBrowserWhenRequired(browser, view_type);
   ExtensionService* service = GetProfile()->GetExtensionService();
   if (service) {
+    std::string extension_id = url.host();
+    if (url.SchemeIs(chrome::kChromeUIScheme) &&
+        url.host() == chrome::kChromeUIExtensionInfoHost)
+      extension_id = url.path().substr(1);
     const Extension* extension =
-        service->extensions()->GetByID(url.host());
+        service->extensions()->GetByID(extension_id);
     if (extension)
       return CreateViewHost(extension, url, browser, view_type);
   }
   return NULL;
 }
 
 ExtensionHost* ExtensionProcessManager::CreatePopupHost(
     const Extension* extension, const GURL& url, Browser* browser) {
   return CreateViewHost(
       extension, url, browser, chrome::VIEW_TYPE_EXTENSION_POPUP);
@@ skipping 540 matching lines @@
         if (service && service->is_ready())
           CreateBackgroundHostsForProfileStartup(this, service->extensions());
       }
       break;
     }
     default:
       ExtensionProcessManager::Observe(type, source, details);
       break;
   }
 }