Refactor use of ppapi_cpp and ppapi_tests to avoid include of untrusted.gypi

chrome/chrome_tests.gypi

 # 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.
 {
   'variables' : {
     # Variables for js2gtest rules
     'gypv8sh': '../tools/gypv8sh.py',
     'js2gtest': 'test/base/js2gtest.js',
     'mock_js': 'third_party/mock4js/mock4js.js',
     'test_api_js': 'test/data/webui/test_api.js',
@@ skipping 707 matching lines @@
         '../net/net.gyp:net_test_support',
         '../build/temp_gyp/googleurl.gyp:googleurl',
         '../skia/skia.gyp:skia',
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
         '../third_party/libxml/libxml.gyp:libxml',
         # run time dependencies
         'default_plugin/default_plugin.gyp:default_plugin',
-        '../ppapi/ppapi_internal.gyp:ppapi_tests',
+        '../ppapi/ppapi_tests.gyp:ppapi_tests',
         '../third_party/mesa/mesa.gyp:osmesa',
         '../third_party/WebKit/Source/WebKit/chromium/WebKit.gyp:copy_TestNetscapePlugIn',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'app/chrome_main_uitest.cc',
         'browser/browser_encoding_uitest.cc',
         'browser/custom_handlers/custom_handlers_uitest.cc',
@@ skipping 3537 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }