Enable webkit_compositor_bindings_unittests in component builds

cc/cc_tests.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 0,
     'use_libcc_for_compositor%': 0,
     'cc_tests_source_files': [
       'CCActiveAnimationTest.cpp',
@@ skipping 113 matching lines @@
             '../testing/gmock.gyp:gmock',
             '../skia/skia.gyp:skia',
             '../third_party/WebKit/Source/WTF/WTF.gyp/WTF.gyp:wtf',
             '../third_party/WebKit/Source/WebKit/chromium/WebKit.gyp:webkit_wtf_support',
             '../third_party/WebKit/Source/WebKit/chromium/WebKit.gyp:webkit',
             '../webkit/compositor_bindings/compositor_bindings.gyp:webkit_compositor_support',
             '../webkit/support/webkit_support.gyp:glue',
           ],
           'sources': [
             '<@(cc_tests_support_files)',
+            'test/test_webkit_platform.cc',
+            'test/test_webkit_platform.h',
           ],
         },
       ],
     }],
   ],
 }