Add --idl-methods <filepath> parameter for skipping renaming of IDL methods.

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 af33c2b94281f75c9b1a9786bc8b7a1ba6d5db93..e3576ef405cd74d0ba0aeedc9a7f9991e2b57c35 100644
--- a/tools/clang/rewrite_to_chrome_style/tests/methods-expected.cc
+++ b/tools/clang/rewrite_to_chrome_style/tests/methods-expected.cc
@@ -302,6 +302,31 @@ class InternalClass {
 
 }  // namespace internal
 
+// Tests for --idl-methods.  See also
+// MethodsNamedAfterIdlMatcherState::SetupBlacklistForTesting method.
+class IdlTestClass {
+ public:
+  static int IdlTestMethodNoParams(char x) { return 123; }
+  static int idlTestMethodOneParam(char x) { return 123; }
+
+  int idlTestMethodNoParams() { return 123; }
+  int IdlTestMethodNoParams(int x) { return 123; }
+
+  int IdlTestMethodOneParam() { return 123; }
+  int idlTestMethodOneParam(int x) { return 123; }
+
+  int IdlTestMethodTwoOrThreeParams() { return 123; }
+  int IdlTestMethodTwoOrThreeParams(int x) { return 123; }
+  int idlTestMethodTwoOrThreeParams(int x, int y) { return 123; }
+  int idlTestMethodTwoOrThreeParams(int x, int y, int z) { return 123; }
+
+  int idlTestMethodAnyNumberOfParams() { return 123; }
+  int idlTestMethodAnyNumberOfParams(int x) { return 123; }
+
+  int path() { return 123; }
+  int GetPath(int x) { return 123; }
+};
+
 }  // namespace blink
 
 // https://crbug.com/640688 - need to rewrite method name below.