Move icon fallbacks into ExtensionAction.

chrome/browser/extensions/api/extension_action/page_as_browser_action_apitest.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 "base/command_line.h"
 #include "chrome/browser/extensions/browser_action_test_util.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
@@ skipping 77 matching lines @@
 
   {
     // Tell the extension to update the page action state again.
     ResultCatcher catcher;
     ui_test_utils::NavigateToURL(browser(),
         GURL(extension->GetResourceURL("update2.html")));
     ASSERT_TRUE(catcher.GetNextResult());
   }
 
   // Test that we received the changes.
-  EXPECT_FALSE(action->GetIcon(tab_id).isNull());
+  EXPECT_FALSE(action->GetIcon(tab_id).IsEmpty());
 }
 
 // Test that calling chrome.pageAction.setPopup() can enable a popup.
 IN_PROC_BROWSER_TEST_F(PageAsBrowserActionApiTest, AddPopup) {
   // Load the extension, which has no default popup.
   ASSERT_TRUE(RunExtensionTest("page_action/add_popup")) << message_;
   const Extension* extension = GetSingleLoadedExtension();
   ASSERT_TRUE(extension) << message_;
 
   int tab_id = ExtensionTabUtil::GetTabId(
@@ skipping 70 matching lines @@
   const Extension* extension = GetSingleLoadedExtension();
   ASSERT_TRUE(extension) << message_;
 
   ResultCatcher catcher;
   ui_test_utils::NavigateToURL(browser(),
       GURL(extension->GetResourceURL("update.html")));
   ASSERT_TRUE(catcher.GetNextResult());
 }
 
 }