Update rewrite_to_chrome_style tool to also rename methods.

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

Index: tools/clang/rewrite_to_chrome_style/tests/fields-original.cc
diff --git a/tools/clang/rewrite_to_chrome_style/tests/fields-original.cc b/tools/clang/rewrite_to_chrome_style/tests/fields-original.cc
index 0e1159b7ce64fd23a0d3fdab4b98adfeb805a58f..6985f4885fe72a436300510c906829259acdae1a 100644
--- a/tools/clang/rewrite_to_chrome_style/tests/fields-original.cc
+++ b/tools/clang/rewrite_to_chrome_style/tests/fields-original.cc
@@ -14,9 +14,10 @@ class C {
     return instanceCount + m_flagField + m_fieldMentioningHTTPAndHTTPS;
   }
 
- private:
   // The m_ prefix, if any, should be removed.

[danakj, 2016/01/06 22:09:40]

The comment is weird now, it really applies to the stuff in the private block.
This one has no m_.

[dcheng, 2016/01/08 01:41:11]

I've added a comment on each one to make this clearer.

   static int instanceCount;
+
+ private:
   const int m_flagField;
   // Statics should be named with s_, but make sure s_ and m_ are both correctly
   // stripped.
@@ -44,3 +45,8 @@ union U {
 };
 
 }  // namespace blink
+
+void F() {
+  // Test that references to a static field are correctly rewritten.
+  blink::C::instanceCount++;
+}