Revert of Add a buildflag to use the handle verifier in a per module mode.

base/base.gyp

Index: base/base.gyp
diff --git a/base/base.gyp b/base/base.gyp
index 39037a3c52b05eb90785435bd783893e9fb748ce..86d2331e8fb004b169b25b2913414df3400e0f94 100644
--- a/base/base.gyp
+++ b/base/base.gyp
@@ -24,7 +24,6 @@
         'allocator/allocator.gyp:allocator',
         'allocator/allocator.gyp:allocator_features#target',
         'base_debugging_flags#target',
-        'base_win_features#target',
         'base_static',
         'base_build_date#target',
         '../testing/gtest.gyp:gtest_prod',
@@ -1020,7 +1019,7 @@
     },
     {
       # GN version: //base/debug:debugging_flags
-      # Since this generates a file, it must only be referenced in the target
+      # Since this generates a file, it most only be referenced in the target
       # toolchain or there will be multiple rules that generate the header.
       # When referenced from a target that might be compiled in the host
       # toolchain, always refer to 'base_debugging_flags#target'.
@@ -1032,27 +1031,6 @@
           'ENABLE_PROFILING=<(profiling)',
         ],
       },
-    },
-    {
-      # GN version: //base/win:base_win_features
-      # Since this generates a file, it must only be referenced in the target
-      # toolchain or there will be multiple rules that generate the header.
-      # When referenced from a target that might be compiled in the host
-      # toolchain, always refer to 'base_win_features#target'.
-      'target_name': 'base_win_features',
-      'conditions': [
-        ['OS=="win"', {
-          'includes': [ '../build/buildflag_header.gypi' ],
-          'variables': {
-            'buildflag_header_path': 'base/win/base_features.h',
-            'buildflag_flags': [
-              'SINGLE_MODULE_MODE_HANDLE_VERIFIER=<(single_module_mode_handle_verifier)',
-            ],
-          },
-        }, {
-          'type': 'none',
-        }],
-      ],
     },
     {
       'type': 'none',