Remove inside_chromium_build gyp variable

content/content_shell.gypi

 # 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': {
     'content_shell_product_name': 'Content Shell',
     # The "19" is so that sites that sniff for version think that this is
     # something reasonably current; the "77.34.5" is a hint that this isn't a
     # standard Chrome.
@@ skipping 29 matching lines @@
         'test_support_content',
         'content_resources.gyp:content_resources',
         '../base/base.gyp:base',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../build/temp_gyp/googleurl.gyp:googleurl',
         '../ipc/ipc.gyp:ipc',
         '../media/media.gyp:media',
         '../net/net.gyp:net',
         '../net/net.gyp:net_resources',
         '../skia/skia.gyp:skia',
+        '../third_party/WebKit/Source/WebKit/chromium/WebKit.gyp:webkit',
+        '../third_party/WebKit/Source/WebKit/chromium/WebKit.gyp:webkit_test_support',
+        '../third_party/WebKit/Tools/DumpRenderTree/DumpRenderTree.gyp/DumpRenderTree.gyp:TestRunner',
         '../ui/gl/gl.gyp:gl',
         '../ui/ui.gyp:ui',
         '../v8/tools/gyp/v8.gyp:v8',
         '../webkit/support/webkit_support.gyp:webkit_resources',
         '../webkit/support/webkit_support.gyp:webkit_support',
-        '<(webkit_src_dir)/Source/WebKit/chromium/WebKit.gyp:webkit',
-        '<(webkit_src_dir)/Source/WebKit/chromium/WebKit.gyp:webkit_test_support',
-        '<(webkit_src_dir)/Tools/DumpRenderTree/DumpRenderTree.gyp/DumpRenderTree.gyp:TestRunner',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'shell/android/shell_jni_registrar.cc',
         'shell/android/shell_jni_registrar.h',
         'shell/android/shell_manager.cc',
         'shell/android/shell_manager.h',
         'shell/common/shell_content_client.cc',
@@ skipping 615 matching lines @@
             'native_lib_target': 'libcontent_shell_content_view',
             'additional_input_paths': ['<(PRODUCT_DIR)/content_shell/assets/content_shell.pak'],
             'asset_location': '<(ant_build_out)/content_shell/assets',
           },
           'includes': [ '../build/java_apk.gypi' ],
         },
       ],
     }],  # OS=="android"
   ]
 }