Take extensions out of Profile into a profile-keyed service, ExtensionSystem.

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller_unittest.mm

 // Copyright (c) 2011 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.
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_nsobject.h"
 #include "base/string16.h"
@@ skipping 255 matching lines @@
 class BookmarkBarControllerTestBase : public CocoaProfileTest {
  public:
   scoped_nsobject<NSView> parent_view_;
   scoped_nsobject<ViewResizerPong> resizeDelegate_;
 
   virtual void SetUp() {
     CocoaProfileTest::SetUp();
     ASSERT_TRUE(profile());
 
     FilePath extension_dir;
-    profile()->CreateExtensionService(CommandLine::ForCurrentProcess(),
-                                      extension_dir, false);
+    static_cast<TestExtensionSystem*>(
+        ExtensionSystemFactory::GetForProfile(profile()))->
+        CreateExtensionService(
+            CommandLine::ForCurrentProcess(),
+            extension_dir, false);
     resizeDelegate_.reset([[ViewResizerPong alloc] init]);
     NSRect parent_frame = NSMakeRect(0, 0, 800, 50);
     parent_view_.reset([[NSView alloc] initWithFrame:parent_frame]);
     [parent_view_ setHidden:YES];
   }
 
   void InstallAndToggleBar(BookmarkBarController* bar) {
     // Force loading of the nib.
     [bar view];
     // Awkwardness to look like we've been installed.
@@ skipping 1894 matching lines @@
                              "2f3b ] 4b ");
   actual = model_test_utils::ModelStringFromNode(root);
   EXPECT_EQ(expected, actual);
 
   // Verify that the other bookmark folder can't be deleted.
   BookmarkButton *otherButton = [bar_ otherBookmarksButton];
   EXPECT_FALSE([bar_ canDragBookmarkButtonToTrash:otherButton]);
 }
 
 }  // namespace