[gn] Use clang plugins on win clang bot

BUG=chromium:644096
TBR=thakis@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2369493002
Cr-Commit-Position: refs/heads/master@{#39665}

infra/mb/mb_config.pyl

@@ -53,7 +53,7 @@
       'V8 Win64': 'gn_release_x64_minimal_symbols',
       'V8 Win64 - debug': 'gn_debug_x64_minimal_symbols',
       # TODO(machenbach): Switch plugins on when errors are fixed.
-      'V8 Win64 - clang': 'gn_release_x64_clang_no_plugins',
+      'V8 Win64 - clang': 'gn_release_x64_clang',
       # Mac.
       'V8 Mac': 'gn_release_x86',
       'V8 Mac - debug': 'gn_debug_x86',
@@ -282,8 +282,8 @@
     'gn_release_x64_asan_symbolized_edge_verify_heap': [
       'gn', 'release_bot', 'x64', 'asan', 'edge', 'lsan', 'symbolized',
       'v8_verify_heap'],
-    'gn_release_x64_clang_no_plugins': [
-      'gn', 'release_bot', 'x64', 'clang', 'no_plugins', 'swarming'],
+    'gn_release_x64_clang': [
+      'gn', 'release_bot', 'x64', 'clang', 'swarming'],
     'gn_release_x64_internal': [
       'gn', 'release_bot', 'x64', 'swarming', 'v8_snapshot_internal'],
     'gn_release_x64_minimal_symbols': [
@@ -516,10 +516,6 @@
                       'use_prebuilt_instrumented_libraries=1'),
     },
 
-    'no_plugins': {
-      'gn_args': 'clang_use_chrome_plugins=false',
-    },
-
     'release': {
       'gn_args': 'is_debug=false',
     },