WebView: Add channel info for UMA

components/version_info/channel_android.cc

Index: components/version_info/channel_android.cc
diff --git a/components/version_info/channel_android.cc b/components/version_info/channel_android.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b63b5ac924cf188f859c8285064138ebb21ecd6b
--- /dev/null
+++ b/components/version_info/channel_android.cc
@@ -0,0 +1,25 @@
+// 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/channel_android.h"
+
+#include <cstring>
+
+namespace version_info {
+
+Channel ChannelFromPackageName(const char* package_name) {
+  if (!strcmp(package_name, "com.android.chrome") ||
+      !strcmp(package_name, "com.chrome.work"))
+    return Channel::STABLE;
+  if (!strcmp(package_name, "com.chrome.beta"))
+    return Channel::BETA;
+  if (!strcmp(package_name, "com.chrome.dev"))
+    return Channel::DEV;
+  if (!strcmp(package_name, "com.chrome.canary"))
+    return Channel::CANARY;
+
+  return Channel::UNKNOWN;
+}
+
+}  // namespace version_info