Move StartsWith[ASCII] to base namespace.

chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc

Index: chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
diff --git a/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc b/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
index 80404d96dbe9575446091b32275812468f656b52..7a639fa30b7277b1693746d4a6137df6d2f81b27 100644
--- a/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
+++ b/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
@@ -67,7 +67,7 @@ bool GetEmbeddedPacScript(const std::string& pac_url, std::string* pac_script) {
   DCHECK(pac_script);
   const std::string kPacURLPrefix =
       "data:application/x-ns-proxy-autoconfig;base64,";
-  return StartsWithASCII(pac_url, kPacURLPrefix, true) &&
+  return base::StartsWithASCII(pac_url, kPacURLPrefix, true) &&
          base::Base64Decode(pac_url.substr(kPacURLPrefix.size()), pac_script);
 }