Account for the fact that some type traits have static methods.

tools/clang/rewrite_to_chrome_style/tests/fields-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 {
 
 // Note: do not add any copy or move constructors to this class: doing so will
 // break test coverage that we don't clobber the class name by trying to emit
 // replacements for synthesized functions.
 class C {
@@ skipping 54 matching lines @@
 // https://crbug.com/640749#c1: Some type traits are inside blink namespace.
 struct IsGarbageCollectedMixin {
   static const bool value = true;
 };
 
 }  // namespace blink
 
 namespace WTF {
 
 // We don't want to capitalize fields in type traits
-// (i.e. no |value| -> |kValue| rename is undesirable below).
+// (i.e. the |value| -> |kValue| rename is undesirable below).
 struct TypeTrait1 {
   static const bool value = true;
 };
 
 // Some type traits are implemented as classes, not structs
 // (e.g. WTF::IsGarbageCollectedType or WTF::IsAssignable).
+// We should not perform a |value| -> |kValue| rename in the type trait below.
 template <typename T>
 class TypeTrait2 {
  public:
   static const bool value = false;
 };
 template <>
 class TypeTrait2<void> {
  public:
   static const bool value = false;
 };
 
+// Some type traits have static methods.  We should not perform
+// a |value| -> |kValue| rename in the type trait below.
+template <typename T, typename U>
+struct IsSubclass {
+ private:
+  typedef char YesType;
+  struct NoType {
+    char padding[8];
+  };
+
+  static YesType subclassCheck(U*);
+  static NoType subclassCheck(...);
+  static T* t;
+
+ public:
+  static const bool value = sizeof(subclassCheck(t)) == sizeof(YesType);
+};
+
+// Some type traits have deleted instance methods.  We should not perform
+// a |value| -> |kValue| rename in the type trait below.
+template <typename U = void>
+struct IsTraceableInCollection {
+  // Expanded from STATIC_ONLY(IsTraceableInCollection) macro:
+ private:
+  IsTraceableInCollection() = delete;
+  IsTraceableInCollection(const IsTraceableInCollection&) = delete;
+  IsTraceableInCollection& operator=(const IsTraceableInCollection&) = delete;
+  void* operator new(unsigned long) = delete;
+  void* operator new(unsigned long, void*) = delete;
+
+ public:
+  static const bool value = true;
+};
+
+// Some type traits have a non-boolean value.
+enum LifetimeManagementType {
+  RefCountedLifetime,
+  GarbageCollectedLifetime,
+};
+template <typename T>
+struct LifetimeOf {
+ private:
+  // Okay to rename |isGarbageCollected| to |kIsGarbageCollected|.
+  static const bool isGarbageCollected = true;
+
+ public:
+  // Expecting no rename of |value|.
+  static const LifetimeManagementType value =
+      !isGarbageCollected ? RefCountedLifetime : GarbageCollectedLifetime;
+};
+
 };  // namespace WTF
 
 void F() {
   // Test that references to a static field are correctly rewritten.
   blink::C::instanceCount++;
   // Force instantiation of a copy constructor for blink::C to make sure field
   // initializers for synthesized functions don't cause weird rewrites.
   blink::C c;
   blink::C c2 = c;
 
   bool b1 = WTF::TypeTrait1::value;
   bool b2 = WTF::TypeTrait2<void>::value;
 }