[build] Rename win-clang bots to msvc

Accompanies:
https://chromium-review.googlesource.com/c/chromium/tools/build/+/753346

NOTRY=true
NOTREECHECKS=true

Bug: chromium:781724
Change-Id: I51e84d7ee7807e557d500c847c72e06e58175e04
Reviewed-on: https://chromium-review.googlesource.com/754687
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49173}

infra/config/cq.cfg

@@ -27,7 +27,7 @@ verifiers {
         name: "v8_linux_shared_compile_rel"
       }
       builders {
-        name: "v8_win64_clang_compile_rel"
+        name: "v8_win64_msvc_compile_rel"
         experiment_percentage: 20
       }
     }

infra/mb/mb_config.pyl

@@ -77,8 +77,7 @@
       'V8 Win32 ASAN': 'gn_release_x86_asan_no_lsan',
       'V8 Win64': 'gn_release_x64_minimal_symbols',
       'V8 Win64 - debug': 'gn_debug_x64_minimal_symbols',
-      # TODO(machenbach): Rename bot to msvc.
-      'V8 Win64 - clang': 'gn_release_x64_msvc',
+      'V8 Win64 - msvc': 'gn_release_x64_msvc',
       # Mac.
       'V8 Mac': 'gn_release_x86',
       'V8 Mac - debug': 'gn_debug_x86',
@@ -219,7 +218,7 @@
       'v8_win_nosnap_shared_rel_ng':
         'gn_release_x86_no_snap_shared_minimal_symbols',
       # TODO(machenbach): Rename bot to msvc.
-      'v8_win64_clang_compile_rel': 'gn_release_x64_msvc',
+      'v8_win64_msvc_compile_rel': 'gn_release_x64_msvc',
       'v8_win64_dbg': 'gn_debug_x64_minimal_symbols',
       'v8_win64_rel_ng': 'gn_release_x64_trybot',
       'v8_mac_rel_ng': 'gn_release_x86_trybot',