Use std::unique_ptr.

include/private/SkTemplates.h

Index: include/private/SkTemplates.h
diff --git a/include/private/SkTemplates.h b/include/private/SkTemplates.h
index e36910e81446365e15c9cb2a2aa8124da7605f16..811b817d2258df0c6216497d6667963419a1a52d 100644
--- a/include/private/SkTemplates.h
+++ b/include/private/SkTemplates.h
@@ -13,8 +13,8 @@
 #include "SkMath.h"
 #include "SkTLogic.h"
 #include "SkTypes.h"
-#include "SkUniquePtr.h"
 #include <limits.h>
+#include <memory>
 #include <new>
 
 /** \file SkTemplates.h
@@ -58,9 +58,9 @@ template <typename R, typename T, R (*P)(T*)> struct SkFunctionWrapper {
     function.
 */
 template <typename T, void (*P)(T*)> class SkAutoTCallVProc
-    : public skstd::unique_ptr<T, SkFunctionWrapper<void, T, P>> {
+    : public std::unique_ptr<T, SkFunctionWrapper<void, T, P>> {
 public:
-    SkAutoTCallVProc(T* obj): skstd::unique_ptr<T, SkFunctionWrapper<void, T, P>>(obj) {}
+    SkAutoTCallVProc(T* obj): std::unique_ptr<T, SkFunctionWrapper<void, T, P>>(obj) {}
 
     operator T*() const { return this->get(); }
     T* detach() { return this->release(); }
@@ -75,9 +75,9 @@ reference is null when the destructor is called, we do not call the
 function.
 */
 template <typename T, int (*P)(T*)> class SkAutoTCallIProc
-    : public skstd::unique_ptr<T, SkFunctionWrapper<int, T, P>> {
+    : public std::unique_ptr<T, SkFunctionWrapper<int, T, P>> {
 public:
-    SkAutoTCallIProc(T* obj): skstd::unique_ptr<T, SkFunctionWrapper<int, T, P>>(obj) {}
+    SkAutoTCallIProc(T* obj): std::unique_ptr<T, SkFunctionWrapper<int, T, P>>(obj) {}
 
     operator T*() const { return this->get(); }
     T* detach() { return this->release(); }
@@ -93,18 +93,21 @@ public:
 
   The size of a SkAutoTDelete is small: sizeof(SkAutoTDelete<T>) == sizeof(T*)
 */
-template <typename T> class SkAutoTDelete : public skstd::unique_ptr<T> {
+template <typename T> class SkAutoTDelete : public std::unique_ptr<T> {
 public:
-    SkAutoTDelete(T* obj = NULL) : skstd::unique_ptr<T>(obj) {}
+    SkAutoTDelete(T* obj = NULL) : std::unique_ptr<T>(obj) {}
 
     operator T*() const { return this->get(); }
     void free() { this->reset(nullptr); }
     T* detach() { return this->release(); }
+
+    // See SkAutoTUnref for why we do this.
+    explicit operator bool() const { return this->get() != nullptr; }
 };
 
-template <typename T> class SkAutoTDeleteArray : public skstd::unique_ptr<T[]> {
+template <typename T> class SkAutoTDeleteArray : public std::unique_ptr<T[]> {
 public:
-    SkAutoTDeleteArray(T array[]) : skstd::unique_ptr<T[]>(array) {}
+    SkAutoTDeleteArray(T array[]) : std::unique_ptr<T[]>(array) {}
 
     void free() { this->reset(nullptr); }
     T* detach() { return this->release(); }