Remove NOTIFICATION_WEB_CONTENTS_VISIBILITY_CHANGED from browser plugin.

content/browser/browser_plugin/test_browser_plugin_guest.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 "content/browser/browser_plugin/test_browser_plugin_guest.h"
 
 #include "base/test/test_timeouts.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/common/browser_plugin/browser_plugin_messages.h"
-#include "content/public/browser/notification_types.h"
 
 namespace content {
 
 class BrowserPluginGuest;
 
 TestBrowserPluginGuest::TestBrowserPluginGuest(
     int instance_id,
     WebContentsImpl* web_contents)
     : BrowserPluginGuest(instance_id, web_contents, NULL, false),
       update_rect_count_(0),
       damage_buffer_call_count_(0),
       exit_observed_(false),
       focus_observed_(false),
       blur_observed_(false),
       advance_focus_observed_(false),
       was_hidden_observed_(false),
       set_damage_buffer_observed_(false),
       input_observed_(false),
       load_stop_observed_(false),
       waiting_for_damage_buffer_with_size_(false),
       last_damage_buffer_size_(gfx::Size()) {
-  // Listen to visibility changes so that a test can wait for these changes.
-  notification_registrar_.Add(this,
-                              NOTIFICATION_WEB_CONTENTS_VISIBILITY_CHANGED,
-                              Source<WebContents>(web_contents));
 }
 
 TestBrowserPluginGuest::~TestBrowserPluginGuest() {
 }
 
 WebContentsImpl* TestBrowserPluginGuest::web_contents() const {
   return static_cast<WebContentsImpl*>(BrowserPluginGuest::web_contents());
 }
 
-void TestBrowserPluginGuest::Observe(int type,
-                                     const NotificationSource& source,
-                                     const NotificationDetails& details) {
-  switch (type) {
-    case NOTIFICATION_WEB_CONTENTS_VISIBILITY_CHANGED: {
-      bool visible = *Details<bool>(details).ptr();
-      if (!visible) {
-        was_hidden_observed_ = true;
-        if (was_hidden_message_loop_runner_.get())
-          was_hidden_message_loop_runner_->Quit();
-      }
-      return;
-    }
-  }
-
-  BrowserPluginGuest::Observe(type, source, details);
-}
-
 void TestBrowserPluginGuest::SendMessageToEmbedder(IPC::Message* msg) {
   if (msg->type() == BrowserPluginMsg_UpdateRect::ID) {
     update_rect_count_++;
     int instance_id = 0;
     BrowserPluginMsg_UpdateRect_Params params;
     BrowserPluginMsg_UpdateRect::Read(msg, &instance_id, &params);
     last_view_size_observed_ = params.view_size;
     if (!expected_auto_view_size_.IsEmpty() &&
         expected_auto_view_size_ == params.view_size) {
       if (auto_view_size_message_loop_runner_.get())
@@ skipping 166 matching lines @@
 }
 
 void TestBrowserPluginGuest::DidStopLoading(
     RenderViewHost* render_view_host) {
   BrowserPluginGuest::DidStopLoading(render_view_host);
   load_stop_observed_ = true;
   if (load_stop_message_loop_runner_.get())
     load_stop_message_loop_runner_->Quit();
 }
 
+void TestBrowserPluginGuest::WasHidden() {
+  was_hidden_observed_ = true;
+  if (was_hidden_message_loop_runner_.get())
+    was_hidden_message_loop_runner_->Quit();
+}
+
 }  // namespace content