Simplify the user agent code some more since after r255534 it's not affected by the site's URL.

android_webview/common/aw_content_client.cc

Index: android_webview/common/aw_content_client.cc
===================================================================
--- android_webview/common/aw_content_client.cc	(revision 255867)
+++ android_webview/common/aw_content_client.cc	(working copy)
@@ -12,16 +12,20 @@
 #include "ui/base/resource/resource_bundle.h"
 #include "webkit/common/user_agent/user_agent_util.h"
 
-namespace android_webview {
+namespace {
 
-std::string AwContentClient::GetProduct() const {
+std::string GetProduct() {
   // "Chrome/XX.0.0.0" identifies that this WebView is derived from the
   // corresponding Chromium version XX.
   // TODO(torne): Use chrome/VERSION file. See http://crbug.com/297522
   return "Chrome/33.0.0.0";
 }
 
-std::string AwContentClient::GetUserAgent() const {
+}
+
+namespace android_webview {
+
+std::string GetUserAgent() {
   // "Version/4.0" had been hardcoded in the legacy WebView.
   std::string product = "Version/4.0 " + GetProduct();
   if (CommandLine::ForCurrentProcess()->HasSwitch(
@@ -31,6 +35,14 @@
   return webkit_glue::BuildUserAgentFromProduct(product);
 }
 
+std::string AwContentClient::GetProduct() const {
+  return ::GetProduct();
+}
+
+std::string AwContentClient::GetUserAgent() const {
+  return android_webview::GetUserAgent();
+}
+
 base::string16 AwContentClient::GetLocalizedString(int message_id) const {
   // TODO(boliu): Used only by WebKit, so only bundle those resources for
   // Android WebView.