Converts usage of SetProp/GetProp to a map. Even after making sure we

app/app_base.gypi

 # Copyright (c) 2010 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.
 
 {
   'target_defaults': {
     'variables': {
       'app_base_target': 0,
     },
     'target_conditions': [
@@ skipping 201 matching lines @@
         'table_model.h',
         'table_model_observer.h',
         'text_elider.cc',
         'text_elider.h',
         'theme_provider.cc',
         'theme_provider.h',
         'throb_animation.cc',
         'throb_animation.h',
         'tween.cc',
         'tween.h',
+        'view_prop.cc',
+        'view_prop.h',
         'win/drag_source.cc',
         'win/drag_source.h',
         'win/drop_target.cc',
         'win/drop_target.h',
         'win/iat_patch_function.cc',
         'win/iat_patch_function.h',
         'win/scoped_prop.cc',
         'win/scoped_prop.h',
         'x11_util.cc',
         'x11_util.h',
@@ skipping 74 matching lines @@
         ['OS!="win"', {
           'sources!': [
             'drag_drop_types.h',
             'gfx/gdi_util.cc',
             'gfx/gdi_util.h',
             'gfx/icon_util.cc',
             'gfx/icon_util.h',
             'gfx/native_theme_win.cc',
             'gfx/native_theme_win.h',
             'os_exchange_data.cc',
+            'view_prop.cc',
+            'view_prop.h',
             'win/iat_patch_function.cc',
             'win/iat_patch_function.h',
           ],
           'sources/': [
             ['exclude', '^win/*'],
           ],
         }],
         ['OS=="linux"', {
           'sources': [
             'gfx/gl/gl_context_egl.cc',
@@ skipping 112 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],
 }