WebView: Add channel info for UMA

components/version_info/version_string.cc

Index: components/version_info/version_string.cc
diff --git a/components/version_info/version_string.cc b/components/version_info/version_string.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c1e9dcda509916a99c5c8db2c569e50eaae3be62
--- /dev/null
+++ b/components/version_info/version_string.cc
@@ -0,0 +1,33 @@
+// Copyright 2017 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 "components/version_info/version_string.h"
+
+#include "components/strings/grit/components_strings.h"
+#include "components/version_info/version_info.h"
+
+#if defined(USE_UNOFFICIAL_VERSION_NUMBER)
+#include "ui/base/l10n/l10n_util.h"  // nogncheck
+#endif  // USE_UNOFFICIAL_VERSION_NUMBER
+
+namespace version_info {
+
+std::string GetVersionStringWithModifier(const std::string& modifier) {
+  std::string current_version;
+  current_version += GetVersionNumber();
+#if defined(USE_UNOFFICIAL_VERSION_NUMBER)
+  current_version += " (";
+  current_version += l10n_util::GetStringUTF8(IDS_VERSION_UI_UNOFFICIAL);
+  current_version += " ";
+  current_version += GetLastChange();
+  current_version += " ";
+  current_version += GetOSType();
+  current_version += ")";
+#endif  // USE_UNOFFICIAL_VERSION_NUMBER
+  if (!modifier.empty())
+    current_version += " " + modifier;
+  return current_version;
+}
+
+}  // namespace version_info