WebView: Add channel info for UMA

components/version_info/channel_android.h

Index: components/version_info/channel_android.h
diff --git a/components/version_info/channel_android.h b/components/version_info/channel_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..d4e5cf2002fa2c2013d337d2ccb8b6d9519ab03c
--- /dev/null
+++ b/components/version_info/channel_android.h
@@ -0,0 +1,17 @@
+// 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.
+
+#ifndef COMPONENTS_VERSION_INFO_CHANNEL_ANDROID_H_
+#define COMPONENTS_VERSION_INFO_CHANNEL_ANDROID_H_
+
+#include "components/version_info/channel.h"
+
+namespace version_info {
+
+// Determine channel based on Chrome's package name.
+Channel ChannelFromPackageName(const char* package_name);
+
+}  // namespace version_info
+
+#endif  // COMPONENTS_VERSION_INFO_CHANNEL_ANDROID_H_