Break xfa_parser_imp apart

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': {
     'chromium_code': 1,
     'pdf_use_skia%': 0,
     'pdf_enable_v8%': 1,
     'pdf_enable_xfa%': 0, # Set to 1 by standalone.gypi in a standalone build.
@@ skipping 943 matching lines @@
         'fpdfsdk/fpdfview_embeddertest.cpp',
         'fpdfsdk/fsdk_baseform_embeddertest.cpp',
         'testing/embedder_test.cpp',
         'testing/embedder_test.h',
         'testing/embedder_test_mock_delegate.h',
         'testing/embedder_test_timer_handling_delegate.h',
       ],
       'conditions': [
         ['pdf_enable_xfa==1', {
           'sources': [
-            'xfa/fxfa/parser/xfa_parser_imp_embeddertest.cpp',
+            'xfa/fxfa/parser/cxfa_simple_parser_embeddertest.cpp',
           ],
         }],
         ['pdf_enable_v8==1', {
           'include_dirs': [
             '<(DEPTH)/v8',
             '<(DEPTH)/v8/include',
           ],
           'dependencies': [
             '<(DEPTH)/v8/src/v8.gyp:v8',
             '<(DEPTH)/v8/src/v8.gyp:v8_libplatform',
@@ skipping 53 matching lines @@
             'fpdfsdk/fpdfxfa/include/fpdfxfa_app.h',
             'fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h',
             'fpdfsdk/fpdfxfa/include/fpdfxfa_page.h',
             'fpdfsdk/fpdfxfa/include/fpdfxfa_util.h',
           ],
         },
       ]
     }],
   ]
 }