rewrite_to_chrome_style: exclude conversion functions from being renamed

tools/clang/rewrite_to_chrome_style/tests/methods-expected.cc

Index: tools/clang/rewrite_to_chrome_style/tests/methods-expected.cc
diff --git a/tools/clang/rewrite_to_chrome_style/tests/methods-expected.cc b/tools/clang/rewrite_to_chrome_style/tests/methods-expected.cc
index 719acfbd331add8111387cd64e7a84825f3b8b57..0b35d834a63bd59fdcfe948b60b48a9f623d0a30 100644
--- a/tools/clang/rewrite_to_chrome_style/tests/methods-expected.cc
+++ b/tools/clang/rewrite_to_chrome_style/tests/methods-expected.cc
@@ -16,7 +16,12 @@ class Task {
   // Note: this is purposely copyable and assignable, to make sure the Clang
   // tool doesn't try to emit replacements for things that aren't explicitly
   // written.
-  // TODO(dcheng): Add an explicit test for something like operator+.
+
+  // Overloaded operators should not be rewritten.
+  Task& operator++() { return *this; }
+
+  // Conversion functions should not be rewritten.
+  explicit operator int() const { return 42; }
 };
 
 // Test that the actual method definition is also updated.