Added Google Cache Invalidation library to DEPS and got it to compile

third_party/cacheinvalidation/overrides/google/cacheinvalidation/callback.h

+// Copyright (c) 2010 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.
+
+#ifndef GOOGLE_CACHEINVALIDATION_CALLBACK_H_
+#define GOOGLE_CACHEINVALIDATION_CALLBACK_H_
+
+#include "base/callback.h"
+
+#define INVALIDATION_CALLBACK1_TYPE(Arg1) ::Callback1<Arg1>::Type
+
+// Below are a collection of types and functions to make up for the
+// limited capabilities of Chrome's callback.h.
+
+namespace invalidation {
+
+typedef ::Callback0::Type Closure;
+
+static inline void DoNothing() {}
+
+template <class T>
+bool IsCallbackRepeatable(const T* callback) {
+  return true;
+}
+
+namespace internal {
+
+// Identity<T>::type is a typedef of T. Useful for preventing the
+// compiler from inferring the type of an argument in templates.
+template <typename T>
+struct Identity {
+  typedef T type;
+};
+
+// Specified by TR1 [4.7.2]
+template <typename T> struct remove_reference {
+  typedef T type;
+};
+
+template <typename T> struct remove_reference<T&> {
+  typedef T type;
+};
+
+}  // namespace internal
+
+// base/callback.h already handles partially applying member functions
+// to an object, so just route to that. (We only need the one-arg
+// case.)
+
+template <class T, typename Arg1>
+typename Callback1<Arg1>::Type* NewPermanentCallback(
+    T* object, void (T::*method)(Arg1)) {
+  return new CallbackImpl<T, void (T::*)(Arg1), Tuple1<Arg1> >(object, method);
+}
+
+// Define function runners for the partial application combinations
+// that we need.
+
+class ZeroArgFunctionRunner : public CallbackRunner<Tuple0> {
+ public:
+  ZeroArgFunctionRunner(void (*fn)()) : fn_(fn) {}
+
+  virtual ~ZeroArgFunctionRunner() {}
+
+  virtual void RunWithParams(const Tuple0& params) { fn_(); }
+
+ private:
+  void (*fn_)();
+};
+
+template <class T>
+class ZeroArgMethodRunner : public CallbackRunner<Tuple0> {
+ public:
+  ZeroArgMethodRunner(T* obj, void (T::*meth)()) : obj_(obj), meth_(meth) {}
+
+  virtual ~ZeroArgMethodRunner() {}
+
+  virtual void RunWithParams(const Tuple0& params) {
+    (obj_->*meth_)();
+  }
+
+ private:
+  T* obj_;
+  void (T::*meth_)();
+};
+
+template <class T, typename Arg1>
+class OneArgCallbackRunner : public CallbackRunner<Tuple0> {
+ public:
+  OneArgCallbackRunner(T* obj, void (T::*meth)(Arg1),
+                       Arg1 arg1)
+      : obj_(obj), meth_(meth), arg1_(arg1) {}
+
+  virtual ~OneArgCallbackRunner() {}
+
+  virtual void RunWithParams(const Tuple0& params) {
+    (obj_->*meth_)(arg1_);
+  }
+
+ private:
+  T* obj_;
+  void (T::*meth_)(Arg1);
+  typename internal::remove_reference<Arg1>::type arg1_;
+};
+
+template <typename Arg1, typename Arg2>
+class TwoArgFunctionRunner : public CallbackRunner<Tuple0> {
+ public:
+  TwoArgFunctionRunner(void (*fn)(Arg1, Arg2), Arg1 arg1, Arg2 arg2)
+      : fn_(fn), arg1_(arg1), arg2_(arg2) {}
+
+  virtual ~TwoArgFunctionRunner() {}
+
+  virtual void RunWithParams(const Tuple0& params) { fn_(arg1_, arg2_); }
+
+ private:
+  void (*fn_)(Arg1, Arg2);
+  typename internal::remove_reference<Arg1>::type arg1_;
+  typename internal::remove_reference<Arg2>::type arg2_;
+};
+
+template <class T, typename Arg1, typename Arg2>
+class TwoArgCallbackRunner : public CallbackRunner<Tuple0> {
+ public:
+  TwoArgCallbackRunner(T* obj, void (T::*meth)(Arg1, Arg2),
+                       Arg1 arg1, Arg2 arg2)
+      : obj_(obj), meth_(meth), arg1_(arg1), arg2_(arg2) {}
+
+  virtual ~TwoArgCallbackRunner() {}
+
+  virtual void RunWithParams(const Tuple0& params) {
+    (obj_->*meth_)(arg1_, arg2_);
+  }
+
+ private:
+  T* obj_;
+  void (T::*meth_)(Arg1, Arg2);
+  typename internal::remove_reference<Arg1>::type arg1_;
+  typename internal::remove_reference<Arg2>::type arg2_;
+};
+
+// Then route the appropriate overloads of NewPermanentCallback() to
+// use the above.
+
+inline Callback0::Type* NewPermanentCallback(void (*fn)()) {
+  return new ZeroArgFunctionRunner(fn);
+}
+
+template <class T1, class T2>
+typename Callback0::Type* NewPermanentCallback(
+    T1* object, void (T2::*method)()) {
+  return new ZeroArgMethodRunner<T1>(object, method);
+}
+
+template <class T1, class T2, typename Arg1>
+typename Callback0::Type* NewPermanentCallback(
+    T1* object,
+    void (T2::*method)(Arg1),
+    typename internal::Identity<Arg1>::type arg1) {
+  return new OneArgCallbackRunner<T1, Arg1>(object, method, arg1);
+}
+
+template <typename Arg1, typename Arg2>
+Callback0::Type* NewPermanentCallback(
+    void (*fn)(Arg1, Arg2),
+    typename internal::Identity<Arg1>::type arg1,
+    typename internal::Identity<Arg2>::type arg2) {
+  return new TwoArgFunctionRunner<Arg1, Arg2>(fn, arg1, arg2);
+}
+
+template <class T1, class T2, typename Arg1, typename Arg2>
+typename Callback0::Type* NewPermanentCallback(
+    T1* object,
+    void (T2::*method)(Arg1, Arg2),
+    typename internal::Identity<Arg1>::type arg1,
+    typename internal::Identity<Arg2>::type arg2) {
+  return new TwoArgCallbackRunner<T1, Arg1, Arg2>(object, method, arg1, arg2);
+}
+
+}  // namespace invalidation
+
+#endif  // GOOGLE_CACHEINVALIDATION_CALLBACK_H_