Move StartsWith[ASCII] to base namespace.

chrome/browser/chromeos/input_method/input_method_engine.cc

Index: chrome/browser/chromeos/input_method/input_method_engine.cc
diff --git a/chrome/browser/chromeos/input_method/input_method_engine.cc b/chrome/browser/chromeos/input_method/input_method_engine.cc
index 32c125d1e18a0a95af1f59ffa5b4e7b6a71be53d..c25ff772ddf9b1caa4f3d79c1de7e1f8004391a8 100644
--- a/chrome/browser/chromeos/input_method/input_method_engine.cc
+++ b/chrome/browser/chromeos/input_method/input_method_engine.cc
@@ -72,13 +72,13 @@ size_t GetUtf8StringLength(const char* s) {
 
 std::string GetKeyFromEvent(const ui::KeyEvent& event) {
   const std::string code = event.GetCodeString();
-  if (StartsWithASCII(code, "Control", true))
+  if (base::StartsWithASCII(code, "Control", true))
     return "Ctrl";
-  if (StartsWithASCII(code, "Shift", true))
+  if (base::StartsWithASCII(code, "Shift", true))
     return "Shift";
-  if (StartsWithASCII(code, "Alt", true))
+  if (base::StartsWithASCII(code, "Alt", true))
     return "Alt";
-  if (StartsWithASCII(code, "Arrow", true))
+  if (base::StartsWithASCII(code, "Arrow", true))
     return code.substr(5);
   if (code == "Escape")
     return "Esc";