Move StartsWith[ASCII] to base namespace.

chrome/test/chromedriver/performance_logger.cc

Index: chrome/test/chromedriver/performance_logger.cc
diff --git a/chrome/test/chromedriver/performance_logger.cc b/chrome/test/chromedriver/performance_logger.cc
index 800e8ec94e27894d16abbd5dd5bc2da849a43321..2dceef9b10c12e4a3790ef57a2f9e75bbdd52ae0 100644
--- a/chrome/test/chromedriver/performance_logger.cc
+++ b/chrome/test/chromedriver/performance_logger.cc
@@ -52,7 +52,8 @@ bool ShouldRequestTraceEvents(const std::string& command) {
 // Returns whether the event belongs to one of kDomains.
 bool ShouldLogEvent(const std::string& method) {
   for (size_t i_domain = 0; i_domain < arraysize(kDomains); ++i_domain) {
-    if (StartsWithASCII(method, kDomains[i_domain], true /* case_sensitive */))
+    if (base::StartsWithASCII(method, kDomains[i_domain],
+                              true /* case_sensitive */))
       return true;
   }
   return false;