Make BrowserAccessibilityManager cross platform. Step 1....

chrome/test/interactive_ui/interactive_ui_tests.gypi

 {
   'target_name': 'interactive_ui_tests',
   'type': 'executable',
   'msvs_guid': '018D4F38-6272-448F-A864-976DA09F05D0',
   'dependencies': [
     '<(DEPTH)/chrome/chrome.gyp:chrome',
     '<(DEPTH)/chrome/chrome.gyp:chrome_resources',
     '<(DEPTH)/chrome/chrome.gyp:chrome_strings',
     '<(DEPTH)/chrome/chrome.gyp:debugger',
     '<(DEPTH)/chrome/chrome.gyp:test_support_common',
@@ skipping 128 matching lines @@
         # resulting .res files get referenced multiple times.
         '<(SHARED_INTERMEDIATE_DIR)/app/app_resources/app_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/chrome/browser_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/chrome/common_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/chrome/renderer_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/net/net_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/webkit/webkit_chromium_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/webkit/webkit_resources.rc',
 
-        '<(DEPTH)/chrome/browser/accessibility_win_browsertest.cc',
+        '<(DEPTH)/chrome/browser/accessibility/accessibility_win_browsertest.cc',
+        '<(DEPTH)/chrome/browser/accessibility/browser_views_accessibility_browsertest.cc',
         # TODO: port sidebar.
         '<(DEPTH)/chrome/browser/sidebar/sidebar_test.cc',
-        '<(DEPTH)/chrome/browser/views/browser_views_accessibility_browsertest.cc',
       ],
       'conditions': [
         ['win_use_allocator_shim==1', {
           'dependencies': [
              '<(DEPTH)/base/allocator/allocator.gyp:allocator',
           ],
         }],
       ],
       'configurations': {
         'Debug_Base': {
           'msvs_settings': {
             'VCLinkerTool': {
               'LinkIncremental': '<(msvs_large_module_debug_link_mode)',
             },
           },
         },
       },  # configurations
     }],  # OS=="win"
   ],  # conditions
 }