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

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

Index: tools/clang/rewrite_to_chrome_style/tests/methods-original.cc
diff --git a/tools/clang/rewrite_to_chrome_style/tests/methods-original.cc b/tools/clang/rewrite_to_chrome_style/tests/methods-original.cc
index 2c9e4ceed5b03055933f5cafbbb34346d47218fc..b340f409191218006f35f80e9e83082cc8172671 100644
--- a/tools/clang/rewrite_to_chrome_style/tests/methods-original.cc
+++ b/tools/clang/rewrite_to_chrome_style/tests/methods-original.cc
@@ -306,6 +306,42 @@ 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, int y) { return 123; }
+  int idlTestMethodTwoOrThreeParams(int x, int y, int z) { return 123; }
+
+  int idlOptionalArgsPass(int x = 0) { return x; }
+  int idlOptionalArgsStillTooMany(int x, int y = 0) { return x + y; }
+  int idlOptionalArgsTooLittle(int x = 0) { return x; }
+
+  template <typename T>
+  int idlTemplateMethod(T x) {
+    return 123;
+  }
+
+  int path() { return 123; }
+  int path(int x) { return 123; }
+};
+
+template <typename T>
+class IdlTemplateClass {
+ public:
+  int idlTestMethod(T x) { return 123; }
+};
+
 }  // namespace blink
 
 // https://crbug.com/640688 - need to rewrite method name below.