Expose "Chrome" as accessible product name.

chrome/common/chrome_version_info.cc

Index: chrome/common/chrome_version_info.cc
diff --git a/chrome/common/chrome_version_info.cc b/chrome/common/chrome_version_info.cc
index 89f6ede74aa3963ceb0589f010d24aeb3c54b132..7671a3d4d1d9dbad93e0e7a7f12450becbdcc250 100644
--- a/chrome/common/chrome_version_info.cc
+++ b/chrome/common/chrome_version_info.cc
@@ -16,6 +16,12 @@
 
 namespace chrome {
 
+std::string VersionInfo::ProductNameAndVersionForUserAgent() const {
+  if (!is_valid())
+    return std::string();
+  return "Chrome/" + Version();
+}
+
 #if defined(OS_WIN) || defined(OS_MACOSX)
 // On Windows and Mac, we get the Chrome version info by querying
 // FileVersionInfo for the current module.