Use chromium version for data reduction proxy version

components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.cc

 // Copyright 2014 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/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_params.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_protocol.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_settings.h"
 #include "components/data_reduction_proxy/common/data_reduction_proxy_headers.h"
 #include "components/data_reduction_proxy/common/data_reduction_proxy_switches.h"
+#include "components/data_reduction_proxy/common/version.h"
 #include "crypto/random.h"
 #include "net/proxy/proxy_server.h"
 #include "net/url_request/url_request.h"
 #include "url/gurl.h"
 
 namespace data_reduction_proxy {
 
 // The empty version for the authentication protocol. Currently used by
 // Android webview.
 #if defined(OS_ANDROID)
 const char kAndroidWebViewProtocolVersion[] = "0";
 #endif
 
 // The clients supported by the data reduction proxy.
 const char kClientAndroidWebview[] = "webview";
 const char kClientChromeAndroid[] = "android";
 const char kClientChromeIOS[] = "ios";
 
 // static
+std::string DataReductionProxyAuthRequestHandler::ChromiumVersion() {
+#if defined(PRODUCT_VERSION)
+  return PRODUCT_VERSION;
+#else
+  return std::string();
+#endif
+}
+
+// static
 bool DataReductionProxyAuthRequestHandler::IsKeySetOnCommandLine() {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   return command_line.HasSwitch(
       data_reduction_proxy::switches::kDataReductionProxyKey);
 }
 
 DataReductionProxyAuthRequestHandler::DataReductionProxyAuthRequestHandler(
     const std::string& client,
     const std::string& version,
     DataReductionProxyParams* params,
@@ skipping 120 matching lines @@
   std::string key =
     command_line.GetSwitchValueASCII(switches::kDataReductionProxyKey);
 #if defined(SPDY_PROXY_AUTH_VALUE)
   if (key.empty())
     key = SPDY_PROXY_AUTH_VALUE;
 #endif
   return key;
 }
 
 }  // namespace data_reduction_proxy