Make the page action space show extensions with active content scripts or

chrome/browser/extensions/page_action_controller.cc

Index: chrome/browser/extensions/page_action_controller.cc
diff --git a/chrome/browser/extensions/page_action_controller.cc b/chrome/browser/extensions/page_action_controller.cc
index ed3c8e67d540433c0a7839cbdc61be834f255d65..a8381e4a8af6c2d8c3f463c49e46921e8d44bb09 100644
--- a/chrome/browser/extensions/page_action_controller.cc
+++ b/chrome/browser/extensions/page_action_controller.cc
@@ -53,8 +53,8 @@ ActionBoxController::Action PageActionController::OnClicked(
   int tab_id = ExtensionTabUtil::GetTabId(tab_contents_->web_contents());
 
   switch (mouse_button) {
-    case 1:
-    case 2:
+    case 1:  // left
+    case 2:  // middle
       if (page_action->HasPopup(tab_id))
         return ACTION_SHOW_POPUP;
 
@@ -67,7 +67,7 @@ ActionBoxController::Action PageActionController::OnClicked(
           mouse_button);
       return ACTION_NONE;
 
-    case 3:
+    case 3:  // right
       return extension->ShowConfigureContextMenus() ?
           ACTION_SHOW_CONTEXT_MENU : ACTION_NONE;
   }