Fix GN Mac component build.

build/secondary/third_party/google_toolbox_for_mac/BUILD.gn

 # Copyright 2014 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.
 
 config("google_toolbox_for_mac_config") {
   include_dirs = [
     ".",
     "src",
     "src/AppKit",
     "src/DebugUtils",
@@ skipping 154 matching lines @@
       "src/Foundation/GTMTransientRootProxy.h",
       "src/Foundation/GTMTransientRootProxy.m",
       "src/Foundation/GTMURITemplate.h",
       "src/Foundation/GTMURITemplate.m",
       "src/Foundation/GTMValidatingContainers.h",
       "src/Foundation/GTMValidatingContainers.m",
       "src/GTMDefines.h",
     ]
 
     libs = [
-      "AddressBook",
-      "AppKit",
-      "Carbon",
-      "Cocoa",
-      "QuartzCore",
+      "AddressBook.framework",
+      "AppKit.framework",
+      "Carbon.framework",
+      "Cocoa.framework",
+      "QuartzCore.framework",
     ]
   } else {  # is_ios
     sources += [
       "src/iPhone/GTMFadeTruncatingLabel.h",
       "src/iPhone/GTMFadeTruncatingLabel.m",
       "src/iPhone/GTMRoundedRectPath.h",
       "src/iPhone/GTMRoundedRectPath.m",
       "src/iPhone/GTMUIImage+Resize.h",
       "src/iPhone/GTMUIImage+Resize.m",
       "src/iPhone/GTMUILocalizer.h",
       "src/iPhone/GTMUILocalizer.m",
     ]
   }
 
   if (is_component_build) {
     # GTM is third-party code, so we don't want to add _EXPORT
     # annotations to it, so build it without -fvisibility=hidden
     # (else the interface class symbols will be hidden in a 64bit
     # build). Only do this in a component build, so that the shipping
     # chrome binary doesn't end up with unnecessarily exported
     # symbols.
-    config -= [ "//build/config/gcc:symbol_visibility_hidden" ]
+    configs -= [ "//build/config/gcc:symbol_visibility_hidden" ]
   }
 }