Fix CJS_PublicMethods::IsNumber() with unit test and some cleanup

pdfium.gyp

 # Copyright 2015 PDFium 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': {
     # TODO(thakis): Enable this, pdfium:29
     #'chromium_code': 1,
 
     'variables': {
@@ skipping 827 matching lines @@
         'testing/fx_string_testhelpers.h',
         'testing/fx_string_testhelpers.cpp',
       ],
       'conditions': [
         ['pdf_enable_xfa==1', {
           'sources': [
             'xfa/fxbarcode/pdf417/BC_PDF417HighLevelEncoder_unittest.cpp',
             'xfa/fxfa/parser/xfa_utils_imp_unittest.cpp',
           ],
         }],
+        ['pdf_enable_v8==1', {
+          'include_dirs': [
+            '<(DEPTH)/v8',
+            '<(DEPTH)/v8/include',
+          ],
+          'sources': [
+            'fpdfsdk/javascript/public_methods_unittest.cpp',
+          ],
+        }],
       ],
     },
     {
       'target_name': 'pdfium_embeddertests',
       'type': 'executable',
       'dependencies': [
         '<(DEPTH)/testing/gmock.gyp:gmock',
         '<(DEPTH)/testing/gtest.gyp:gtest',
         'pdfium',
         'test_support',
@@ skipping 90 matching lines @@
             'fpdfsdk/include/fpdfxfa/fpdfxfa_app.h',
             'fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h',
             'fpdfsdk/include/fpdfxfa/fpdfxfa_page.h',
             'fpdfsdk/include/fpdfxfa/fpdfxfa_util.h',
           ],
         },
       ]
     }],
   ]
 }