<webview>: Partially migrate loadcommit event from content to chrome

chrome/browser/webview/webview_guest.cc

Index: chrome/browser/webview/webview_guest.cc
diff --git a/chrome/browser/webview/webview_guest.cc b/chrome/browser/webview/webview_guest.cc
index 5d97f2af8c0edb0374b628d831549c7f67f31bb6..fd53c45c5754b5711398a746d29092f2f9e3a0ed 100644
--- a/chrome/browser/webview/webview_guest.cc
+++ b/chrome/browser/webview/webview_guest.cc
@@ -6,7 +6,9 @@
 
 #include "base/lazy_instance.h"
 #include "chrome/browser/extensions/api/web_request/web_request_api.h"
+#include "chrome/browser/extensions/event_router.h"
 #include "chrome/browser/extensions/extension_renderer_state.h"
+#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/script_executor.h"
 #include "chrome/browser/webview/webview_constants.h"
 #include "content/public/browser/browser_thread.h"
@@ -76,6 +78,35 @@ WebViewGuest::~WebViewGuest() {
   webview_guest_map.Get().erase(key);
 }
 
+void WebViewGuest::DispatchEvent(const std::string& event_name,
+                                 scoped_ptr<DictionaryValue> event) {
+  Profile* profile = Profile::FromBrowserContext(
+      web_contents()->GetBrowserContext());
+
+  extensions::EventFilteringInfo info;
+  info.SetURL(GURL());
+  info.SetInstanceID(guest_instance_id_);
+  scoped_ptr<ListValue> args(new ListValue());
+  args->Append(event.release());
+
+  extensions::EventRouter::DispatchEvent(
+      embedder_web_contents_, profile, extension_id_,
+      event_name, args.Pass(),
+      extensions::EventRouter::USER_GESTURE_UNKNOWN, info);
+}
+
+void WebViewGuest::DidCommitProvisionalLoadForFrame(
+    int64 frame_id,
+    bool is_main_frame,
+    const GURL& url,
+    content::PageTransition transition_type,
+    content::RenderViewHost* render_view_host) {
+  scoped_ptr<DictionaryValue> event(new DictionaryValue());
+  event->SetString(keys::kUrl, url.spec());
+  event->SetBoolean(keys::kIsTopLevel, is_main_frame);
+  DispatchEvent(keys::kEventLoadCommit, event.Pass());
+}
+
 void WebViewGuest::WebContentsDestroyed(WebContents* web_contents) {
   RemoveWebViewFromExtensionRendererState(web_contents);
   content::BrowserThread::PostTask(