Add UMA metrics for blocked plugins.

chrome/renderer/chrome_content_renderer_client.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/renderer/chrome_content_renderer_client.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/message_loop.h"
@@ skipping 443 matching lines @@
       }
       return NULL;
     }
 
     return render_view->CreateNPAPIPlugin(
         frame, params, info.path, actual_mime_type);
   }
 
   observer->DidBlockContentType(CONTENT_SETTINGS_TYPE_PLUGINS, resource);
   if (plugin_setting == CONTENT_SETTING_ASK) {
+    render_view->Send(
+        new ViewHostMsg_UserMetricsRecordAction("Plugin_ClickToPlay"));
     return CreatePluginPlaceholder(
         render_view, frame, params, *group, IDR_CLICK_TO_PLAY_PLUGIN_HTML,
         IDS_PLUGIN_LOAD, false, true);
   } else {
+    render_view->Send(
+        new ViewHostMsg_UserMetricsRecordAction("Plugin_Blocked"));
     return CreatePluginPlaceholder(
         render_view, frame, params, *group, IDR_BLOCKED_PLUGIN_HTML,
         IDS_PLUGIN_BLOCKED, false, true);
   }
 }
 
 WebPlugin* ChromeContentRendererClient::CreatePluginPlaceholder(
     RenderView* render_view,
     WebFrame* frame,
     const WebPluginParams& params,
@@ skipping 220 matching lines @@
   if (spellcheck_.get())
     thread->RemoveObserver(spellcheck_.get());
   SpellCheck* new_spellcheck = new SpellCheck();
   if (spellcheck_provider_)
     spellcheck_provider_->SetSpellCheck(new_spellcheck);
   spellcheck_.reset(new_spellcheck);
   thread->AddObserver(new_spellcheck);
 }
 
 }  // namespace chrome