Move StartsWith[ASCII] to base namespace.

chrome/browser/extensions/isolated_app_browsertest.cc

Index: chrome/browser/extensions/isolated_app_browsertest.cc
diff --git a/chrome/browser/extensions/isolated_app_browsertest.cc b/chrome/browser/extensions/isolated_app_browsertest.cc
index c55f602a0d6ca574600d93d86038eabc7f8dc423..f7b1b1e4b009b6c1f786ede151b7abb9591b1e91 100644
--- a/chrome/browser/extensions/isolated_app_browsertest.cc
+++ b/chrome/browser/extensions/isolated_app_browsertest.cc
@@ -42,7 +42,8 @@ std::string WrapForJavascriptAndExtract(const char* javascript_expression) {
 scoped_ptr<net::test_server::HttpResponse> HandleExpectAndSetCookieRequest(
     const net::test_server::EmbeddedTestServer* test_server,
     const net::test_server::HttpRequest& request) {
-  if (!StartsWithASCII(request.relative_url, "/expect-and-set-cookie?", true))
+  if (!base::StartsWithASCII(request.relative_url, "/expect-and-set-cookie?",
+                             true))
     return scoped_ptr<net::test_server::HttpResponse>();
 
   scoped_ptr<net::test_server::BasicHttpResponse> http_response(