Add pin icon to the omnibar in windows 8 metro mode.

chrome/browser/ui/browser.cc

Index: chrome/browser/ui/browser.cc
diff --git a/chrome/browser/ui/browser.cc b/chrome/browser/ui/browser.cc
index 332accd8348287ed66402ae5ede36135b9981fed..f2972e67ee6dc0f9d004818afb2e1a0173d26519 100644
--- a/chrome/browser/ui/browser.cc
+++ b/chrome/browser/ui/browser.cc
@@ -1729,6 +1729,16 @@ void Browser::URLStarredChanged(TabContents* source, bool starred) {
 }
 
 ///////////////////////////////////////////////////////////////////////////////
+// Browser, MetroPinTabHelperDelegate implementation:
+
+void Browser::IsPinnedChanged(content::WebContents* source, bool is_pinned) {
+#if defined(OS_WIN)
+  if (source == chrome::GetActiveWebContents(this))
+    window_->SetMetroPinnedState(is_pinned);
+#endif
+}
+
+///////////////////////////////////////////////////////////////////////////////
 // Browser, ZoomObserver implementation:
 
 void Browser::OnZoomIconChanged(TabContents* source,
@@ -2091,6 +2101,7 @@ void Browser::SetAsDelegate(TabContents* tab, Browser* delegate) {
   tab->constrained_window_tab_helper()->set_delegate(delegate);
   tab->core_tab_helper()->set_delegate(delegate);
   tab->search_engine_tab_helper()->set_delegate(delegate);
+  tab->metro_pin_tab_helper()->set_delegate(delegate);
 }
 
 void Browser::CloseFrame() {