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

chrome/browser/ui/browser.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 "chrome/browser/ui/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // OS_WIN
@@ skipping 1711 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////
 // Browser, BookmarkTabHelperDelegate implementation:
 
 void Browser::URLStarredChanged(TabContents* source, bool starred) {
   if (source == chrome::GetActiveTabContents(this))
     window_->SetStarredState(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,
                                 ZoomController::ZoomIconState state) {
   if (source == chrome::GetActiveTabContents(this))
     window_->SetZoomIconState(state);
 }
 
 void Browser::OnZoomChanged(TabContents* source,
                             int zoom_percent,
@@ skipping 342 matching lines @@
   // WebContents...
   tab->web_contents()->SetDelegate(delegate);
 
   // ...and all the helpers.
   tab->blocked_content_tab_helper()->set_delegate(delegate);
   tab->bookmark_tab_helper()->set_delegate(delegate);
   tab->zoom_controller()->set_observer(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() {
   window_->Close();
 }
 
 void Browser::TabDetachedAtImpl(TabContents* contents, int index,
                                 DetachType type) {
   if (type == DETACH_TYPE_DETACH) {
     // Save the current location bar state, but only if the tab being detached
@@ skipping 171 matching lines @@
   if (contents && !allow_js_access) {
     contents->web_contents()->GetController().LoadURL(
         target_url,
         content::Referrer(),
         content::PAGE_TRANSITION_LINK,
         std::string());  // No extra headers.
   }
 
   return contents != NULL;
 }