Add a PGO tag for the PGO builds in chrome://version

chrome/browser/ui/webui/version_ui.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/version_ui.h"
 
 #include "base/command_line.h"
 #include "base/i18n/message_formatter.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
@@ skipping 120 matching lines @@
                                   IDS_VERSION_UI_PROFILE_PATH);
   html_source->AddString(version_ui::kProfilePath, std::string());
 
   html_source->AddLocalizedString(version_ui::kVariationsName,
                                   IDS_VERSION_UI_VARIATIONS);
 
 #if defined(OS_WIN)
 #if defined(__clang__)
   html_source->AddString("compiler", "clang");
 #elif defined(_MSC_VER) && _MSC_VER == 1900
+#if BUILDFLAG(PGO_BUILD)
+  html_source->AddString("compiler", "MSVC 2015 (PGO)");
+#else
   html_source->AddString("compiler", "MSVC 2015");
-#elif defined(_MSC_VER) && _MSC_VER == 1800
-  html_source->AddString("compiler", "MSVC 2013");
+#endif
 #elif defined(_MSC_VER)
 #error "Unsupported version of MSVC."
 #else
   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);
   html_source->AddResourcePath(version_ui::kAboutVersionCSS,
@@ skipping 18 matching lines @@
   // Set up the chrome://theme/ source.
   ThemeSource* theme = new ThemeSource(profile);
   content::URLDataSource::Add(profile, theme);
 #endif
 
   WebUIDataSource::Add(profile, CreateVersionUIDataSource());
 }
 
 VersionUI::~VersionUI() {
 }