Rename CFX_RetainPtr to RetainPtr

This CL renames CFX_RetainPtr to RetainPtr and places in the fxcrt
namespace.

Bug: pdfium:898
Change-Id: I8798a9f79cb0840d3f037e8d04937cedd742914e
Reviewed-on: https://pdfium-review.googlesource.com/14616
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 0 insertions, 124 deletions

diff --git a/core/fxcrt/cfx_retain_ptr.h b/core/fxcrt/cfx_retain_ptr.h
deleted file mode 100644
index d3896ba6ae..0000000000
--- a/core/fxcrt/cfx_retain_ptr.h
+++ /dev/null
@@ -1,124 +0,0 @@
-// Copyright 2016 PDFium 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 CORE_FXCRT_CFX_RETAIN_PTR_H_
-#define CORE_FXCRT_CFX_RETAIN_PTR_H_
-
-#include <functional>
-#include <memory>
-#include <utility>
-
-#include "core/fxcrt/fx_system.h"
-
-// Used with std::unique_ptr to Release() objects that can't be deleted.
-template <class T>
-struct ReleaseDeleter {
-  inline void operator()(T* ptr) const { ptr->Release(); }
-};
-
-// Analogous to base's scoped_refptr.
-template <class T>
-class CFX_RetainPtr {
- public:
-  explicit CFX_RetainPtr(T* pObj) : m_pObj(pObj) {
-    if (m_pObj)
-      m_pObj->Retain();
-  }
-
-  CFX_RetainPtr() {}
-  CFX_RetainPtr(const CFX_RetainPtr& that) : CFX_RetainPtr(that.Get()) {}
-  CFX_RetainPtr(CFX_RetainPtr&& that) noexcept { Swap(that); }
-
-  // Deliberately implicit to allow returning nullptrs.
-  // NOLINTNEXTLINE(runtime/explicit)
-  CFX_RetainPtr(std::nullptr_t ptr) {}
-
-  template <class U>
-  CFX_RetainPtr(const CFX_RetainPtr<U>& that) : CFX_RetainPtr(that.Get()) {}
-
-  template <class U>
-  CFX_RetainPtr<U> As() const {
-    return CFX_RetainPtr<U>(static_cast<U*>(Get()));
-  }
-
-  void Reset(T* obj = nullptr) {
-    if (obj)
-      obj->Retain();
-    m_pObj.reset(obj);
-  }
-
-  T* Get() const { return m_pObj.get(); }
-  void Swap(CFX_RetainPtr& that) { m_pObj.swap(that.m_pObj); }
-
-  // Useful for passing notion of object ownership across a C API.
-  T* Leak() { return m_pObj.release(); }
-  void Unleak(T* ptr) { m_pObj.reset(ptr); }
-
-  CFX_RetainPtr& operator=(const CFX_RetainPtr& that) {
-    if (*this != that)
-      Reset(that.Get());
-    return *this;
-  }
-
-  CFX_RetainPtr& operator=(CFX_RetainPtr&& that) {
-    m_pObj.reset(that.Leak());
-    return *this;
-  }
-
-  bool operator==(const CFX_RetainPtr& that) const {
-    return Get() == that.Get();
-  }
-  bool operator!=(const CFX_RetainPtr& that) const { return !(*this == that); }
-
-  bool operator<(const CFX_RetainPtr& that) const {
-    return std::less<T*>()(Get(), that.Get());
-  }
-
-  explicit operator bool() const { return !!m_pObj; }
-  T& operator*() const { return *m_pObj.get(); }
-  T* operator->() const { return m_pObj.get(); }
-
- private:
-  std::unique_ptr<T, ReleaseDeleter<T>> m_pObj;
-};
-
-// Trivial implementation - internal ref count with virtual destructor.
-class CFX_Retainable {
- public:
-  bool HasOneRef() const { return m_nRefCount == 1; }
-
- protected:
-  virtual ~CFX_Retainable() {}
-
- private:
-  template <typename U>
-  friend struct ReleaseDeleter;
-
-  template <typename U>
-  friend class CFX_RetainPtr;
-
-  void Retain() { ++m_nRefCount; }
-  void Release() {
-    ASSERT(m_nRefCount > 0);
-    if (--m_nRefCount == 0)
-      delete this;
-  }
-
-  intptr_t m_nRefCount = 0;
-};
-
-namespace pdfium {
-
-// Helper to make a CFX_RetainPtr along the lines of std::make_unique<>(),
-// or pdfium::MakeUnique<>(). Arguments are forwarded to T's constructor.
-// Classes managed by CFX_RetainPtr should have protected (or private)
-// constructors, and should friend this function.
-template <typename T, typename... Args>
-CFX_RetainPtr<T> MakeRetain(Args&&... args) {
-  return CFX_RetainPtr<T>(new T(std::forward<Args>(args)...));
-}
-
-}  // namespace pdfium
-
-#endif  // CORE_FXCRT_CFX_RETAIN_PTR_H_