Browser plugin: Implement titleChanged event.

content/renderer/browser_plugin/browser_plugin.cc

Index: content/renderer/browser_plugin/browser_plugin.cc
diff --git a/content/renderer/browser_plugin/browser_plugin.cc b/content/renderer/browser_plugin/browser_plugin.cc
index 5b2fce11d00b624bd19c5598988e72a718f44c1e..4c12cc73fdacda603f736329dcdb3f3278c3ddf3 100644
--- a/content/renderer/browser_plugin/browser_plugin.cc
+++ b/content/renderer/browser_plugin/browser_plugin.cc
@@ -42,6 +42,8 @@ using WebKit::WebVector;
 namespace content {
 
 namespace {
+
+// Adding a new event?  Update InitializeEvents as well.
 const char kExitEventName[] = "exit";
 const char kIsTopLevel[] = "isTopLevel";
 const char kLoadAbortEventName[] = "loadabort";
@@ -49,12 +51,15 @@ const char kLoadCommitEventName[] = "loadcommit";
 const char kLoadRedirectEventName[] = "loadredirect";
 const char kLoadStartEventName[] = "loadstart";
 const char kLoadStopEventName[] = "loadstop";
+const char kTitleChangeEventName[] = "titlechange";
+
 const char kNewURL[] = "newUrl";
 const char kOldURL[] = "oldUrl";
 const char kPartitionAttribute[] = "partition";
 const char kPersistPrefix[] = "persist:";
 const char kProcessId[] = "processId";
 const char kSrcAttribute[] = "src";
+const char kTitle[] = "title";
 const char kType[] = "type";
 const char kURL[] = "url";
 
@@ -253,6 +258,7 @@ void BrowserPlugin::InitializeEvents() {
   event_listener_map_[kLoadRedirectEventName] = EventListeners();
   event_listener_map_[kLoadStartEventName] = EventListeners();
   event_listener_map_[kLoadStopEventName] = EventListeners();
+  event_listener_map_[kTitleChangeEventName] = EventListeners();
 }
 
 void BrowserPlugin::RemoveEventListeners() {
@@ -559,6 +565,24 @@ void BrowserPlugin::LoadRedirect(const GURL& old_url,
   TriggerEvent(kLoadRedirectEventName, &event);
 }
 
+void BrowserPlugin::TitleChange(const string16& title) {
+  if (!HasListeners(kTitleChangeEventName))
+    return;
+
+  WebKit::WebElement plugin = container()->element();
+  v8::HandleScope handle_scope;
+  v8::Context::Scope context_scope(
+      plugin.document().frame()->mainWorldScriptContext());
+
+  // Construct the titlechanged event object.
+  v8::Local<v8::Object> event = v8::Object::New();
+  event->Set(v8::String::New(kTitle, sizeof(kTitle) - 1),
+             v8::String::New(title.data(), title.size()),
+             v8::ReadOnly);
+
+  TriggerEvent(kTitleChangeEventName, &event);
+}
+
 void BrowserPlugin::AdvanceFocus(bool reverse) {
   // We do not have a RenderView when we are testing.
   if (render_view_)