Implement page action popups.

chrome/browser/cocoa/location_bar_view_mac.mm

Index: chrome/browser/cocoa/location_bar_view_mac.mm
diff --git a/chrome/browser/cocoa/location_bar_view_mac.mm b/chrome/browser/cocoa/location_bar_view_mac.mm
index 2e935cc179692274c86ab93338655ecd5184535b..f74d951318280d2b7bb0ebd1c7cb2d76ca7f21e2 100644
--- a/chrome/browser/cocoa/location_bar_view_mac.mm
+++ b/chrome/browser/cocoa/location_bar_view_mac.mm
@@ -295,6 +295,20 @@ int LocationBarViewMac::PageActionVisibleCount() {
   return -1;
 }
 
+ExtensionAction* LocationBarViewMac::GetPageAction(size_t index) {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
+ExtensionAction* LocationBarViewMac::GetVisiblePageAction(size_t index) {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
+void LocationBarViewMac::TestPageActionPressed(size_t index) {
+  NOTIMPLEMENTED();
+}
+
 NSImage* LocationBarViewMac::GetTabButtonImage() {
   if (!tab_button_image_) {
     SkBitmap* skiaBitmap = ResourceBundle::GetSharedInstance().