Add chrome common files to android build.

chrome/common/chrome_version_info_linux.cc

-// Copyright (c) 2011 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/common/chrome_version_info.h"
-
-namespace chrome {
-
-// static
-std::string VersionInfo::GetVersionStringModifier() {
-  char* env = getenv("CHROME_VERSION_EXTRA");
-  if (!env)
-    return std::string();
-  std::string modifier(env);
-
-#if defined(GOOGLE_CHROME_BUILD)
-  // Only ever return "", "unknown", "dev" or "beta" in a branded build.
-  if (modifier == "unstable")  // linux version of "dev"
-    modifier = "dev";
-  if (modifier == "stable") {
-    modifier = "";
-  } else if ((modifier == "dev") || (modifier == "beta")) {
-    // do nothing.
-  } else {
-    modifier = "unknown";
-  }
-#endif
-
-  return modifier;
-}
-
-// static
-VersionInfo::Channel VersionInfo::GetChannel() {
-#if defined(GOOGLE_CHROME_BUILD)
-  std::string channel = GetVersionStringModifier();
-  if (channel.empty()) {
-    return CHANNEL_STABLE;
-  } else if (channel == "beta") {
-    return CHANNEL_BETA;
-  } else if (channel == "dev") {
-    return CHANNEL_DEV;
-  } else if (channel == "canary") {
-    return CHANNEL_CANARY;
-  }
-#endif
-
-  return CHANNEL_UNKNOWN;
-}
-
-}  // namespace chrome