Prepare for building with enable_app_list=0 on Desktop

chrome/browser/ui/app_list/app_list_service_mac.mm

 // Copyright 2013 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 "chrome/browser/ui/app_list/app_list_service_mac.h"
 
 #include <ApplicationServices/ApplicationServices.h>
 #import <Cocoa/Cocoa.h>
 #include <stddef.h>
 
@@ skipping 248 matching lines @@
       NSMaxY([[[NSScreen screens] firstObject] frame]);
   AppListServiceMac::FindAnchorPoint(window_size,
                                      display,
                                      primary_display_height,
                                      cursor_is_visible,
                                      cursor,
                                      target_origin,
                                      start_origin);
 }
 
-AppListServiceMac* GetActiveInstance() {
-  if (app_list::switches::IsMacViewsAppListEnabled()) {
-#if defined(TOOLKIT_VIEWS)
-    // TODO(tapted): Return AppListServiceViewsMac instance.
-#else
-    NOTREACHED();
-#endif
-  }
-  return AppListServiceCocoaMac::GetInstance();
-}
-
 }  // namespace
 
 AppListServiceMac::AppListServiceMac() {
   animation_controller_.reset([[AppListAnimationController alloc] init]);
 }
 
 AppListServiceMac::~AppListServiceMac() {}
 
 // static
 void AppListServiceMac::FindAnchorPoint(const gfx::Size& window_size,
@@ skipping 215 matching lines @@
   [NSApp activateIgnoringOtherApps:YES];
   RecordAppListLaunch();
 }
 
 void AppListServiceMac::WindowAnimationDidEnd() {
   [animation_controller_ cleanupOnUIThread];
 }
 
 // static
 AppListService* AppListService::Get() {
-  return GetActiveInstance();
+  return AppListServiceCocoaMac::GetInstance();
 }
 
 // static
 void AppListService::InitAll(Profile* initial_profile,
                              const base::FilePath& profile_path) {
-  GetActiveInstance()->InitWithProfilePath(initial_profile, profile_path);
+  AppListServiceCocoaMac::GetInstance()->InitWithProfilePath(initial_profile,
+                                                             profile_path);
 }
 
 @implementation AppListAnimationController
 
 - (BOOL)isClosing {
   return !!window_;
 }
 
 - (void)animateWindow:(NSWindow*)window
          targetOrigin:(NSPoint)targetOrigin
@@ skipping 44 matching lines @@
   [window_ close];
   window_.reset();
   animation_.reset();
 
   if (closing)
     apps::AppShimHandler::MaybeTerminate();
 }
 
 - (void)animationDidEnd:(NSAnimation*)animation {
   content::BrowserThread::PostTask(
-      content::BrowserThread::UI,
-      FROM_HERE,
+      content::BrowserThread::UI, FROM_HERE,
       base::Bind(&AppListServiceMac::WindowAnimationDidEnd,
-                 base::Unretained(GetActiveInstance())));
+                 base::Unretained(AppListServiceCocoaMac::GetInstance())));
 }
 
 @end