Update rewrite_to_chrome_style tool to also rename methods.

tools/clang/rewrite_to_chrome_style/tests/functions-original.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 namespace blink {
 
 // Tests that the prototype for a function is updated.
 int testFunctionThatTakesTwoInts(int x, int y);
 
 // Test that the actual function definition is also updated.
 int testFunctionThatTakesTwoInts(int x, int y) {
   if (x == 0)
     return y;
   // Calls to the function also need to be updated.
   return testFunctionThatTakesTwoInts(x - 1, y + 1);
 }
 
 // Note: F is already Google style and should not change.
 void F() {
   // Test referencing a function without calling it.
   int (*functionPointer)(int, int) = &testFunctionThatTakesTwoInts;
 }
 
 }  // namespace blink
+
+void G() {
+  blink::testFunctionThatTakesTwoInts(1, 2);
+}