Output the version of MSVS in chrome://version

chrome/browser/ui/webui/version_ui.cc

Index: chrome/browser/ui/webui/version_ui.cc
diff --git a/chrome/browser/ui/webui/version_ui.cc b/chrome/browser/ui/webui/version_ui.cc
index f9c70a1e20ca55507f8a401b2a9ddd9f10498f24..45ac460b45c46bbf32bac36f7333914a4e324ceb 100644
--- a/chrome/browser/ui/webui/version_ui.cc
+++ b/chrome/browser/ui/webui/version_ui.cc
@@ -139,10 +139,16 @@ WebUIDataSource* CreateVersionUIDataSource() {
 #if defined(OS_WIN)
 #if defined(__clang__)
   html_source->AddString("compiler", "clang");
+#elif defined(_MSC_VER) && _MSC_VER == 1900
+  html_source->AddString("compiler", "MSVC 2015");
+#elif defined(_MSC_VER) && _MSC_VER == 1800
+  html_source->AddString("compiler", "MSVC 2013");
+#elif defined(_MSC_VER)
+#error "Unsupported version of MSVC."
 #else
-  html_source->AddString("compiler", "MSVC");
-#endif
+  html_source->AddString("compiler", "Unknown");
 #endif
+#endif  // defined(OS_WIN)
 
   html_source->SetJsonPath("strings.js");
   html_source->AddResourcePath(version_ui::kVersionJS, IDR_VERSION_UI_JS);