Browser plugin: Implement titleChanged event.

content/browser/browser_plugin/browser_plugin_guest.cc

Index: content/browser/browser_plugin/browser_plugin_guest.cc
diff --git a/content/browser/browser_plugin/browser_plugin_guest.cc b/content/browser/browser_plugin/browser_plugin_guest.cc
index b65256c27f1fce7233363df7a66a376a1daa98d8..b4d95b1bfecad5dd92489d537020e63afcbb2198 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.cc
+++ b/content/browser/browser_plugin/browser_plugin_guest.cc
@@ -14,6 +14,7 @@
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/common/browser_plugin_messages.h"
 #include "content/common/view_messages.h"
+#include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_process_host.h"
@@ -55,6 +56,9 @@ BrowserPluginGuest::BrowserPluginGuest(int instance_id,
   notification_registrar_.Add(
       this, content::NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
       content::Source<content::WebContents>(web_contents));
+  notification_registrar_.Add(
+      this, content::NOTIFICATION_WEB_CONTENTS_TITLE_UPDATED,
+      content::Source<content::WebContents>(web_contents));
 }
 
 BrowserPluginGuest::~BrowserPluginGuest() {
@@ -89,6 +93,16 @@ void BrowserPluginGuest::Observe(int type,
                    is_top_level);
       break;
     }
+    case NOTIFICATION_WEB_CONTENTS_TITLE_UPDATED: {
+      DCHECK_EQ(Source<WebContents>(source).ptr(), web_contents());
+      std::pair<NavigationEntry*, bool>* title =
+          Details<std::pair<NavigationEntry*, bool> >(details).ptr();
+      if (title->first) {
+        string16 title_text = title->first->GetTitle();
+        TitleChanged(title_text);
+      }
+      break;
+    }
     default:
       NOTREACHED() << "Unexpected notification sent.";
       break;
@@ -367,6 +381,11 @@ void BrowserPluginGuest::LoadRedirect(
           instance_id(), old_url, new_url, is_top_level));
 }
 
+void BrowserPluginGuest::TitleChanged(const string16& title) {
+  SendMessageToEmbedder(
+      new BrowserPluginMsg_TitleChanged(instance_id(), title));
+}
+
 void BrowserPluginGuest::DidCommitProvisionalLoadForFrame(
     int64 frame_id,
     bool is_main_frame,