Replace SmartPointer<T> with unique_ptr<T>

src/profiler/sampling-heap-profiler.h

 // Copyright 2015 the V8 project 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 V8_PROFILER_SAMPLING_HEAP_PROFILER_H_
 #define V8_PROFILER_SAMPLING_HEAP_PROFILER_H_
 
 #include <deque>
 #include <map>
+#include <memory>
 #include <set>
 #include "include/v8-profiler.h"
 #include "src/heap/heap.h"
 #include "src/profiler/strings-storage.h"
 
 namespace v8 {
 
 namespace base {
 class RandomNumberGenerator;
 }
@@ skipping 114 matching lines @@
   // loaded scripts keyed by their script id.
   v8::AllocationProfile::Node* TranslateAllocationNode(
       AllocationProfile* profile, SamplingHeapProfiler::AllocationNode* node,
       const std::map<int, Handle<Script>>& scripts);
   v8::AllocationProfile::Allocation ScaleSample(size_t size,
                                                 unsigned int count);
   AllocationNode* AddStack();
 
   Isolate* const isolate_;
   Heap* const heap_;
-  base::SmartPointer<SamplingAllocationObserver> new_space_observer_;
-  base::SmartPointer<SamplingAllocationObserver> other_spaces_observer_;
+  std::unique_ptr<SamplingAllocationObserver> new_space_observer_;
+  std::unique_ptr<SamplingAllocationObserver> other_spaces_observer_;
   StringsStorage* const names_;
   AllocationNode profile_root_;
   std::set<Sample*> samples_;
   const int stack_depth_;
   const uint64_t rate_;
   v8::HeapProfiler::SamplingFlags flags_;
 
   friend class SamplingAllocationObserver;
+
+  DISALLOW_COPY_AND_ASSIGN(SamplingHeapProfiler);
 };
 
 class SamplingAllocationObserver : public AllocationObserver {
  public:
   SamplingAllocationObserver(Heap* heap, intptr_t step_size, uint64_t rate,
                              SamplingHeapProfiler* profiler,
                              base::RandomNumberGenerator* random)
       : AllocationObserver(step_size),
         profiler_(profiler),
         heap_(heap),
@@ skipping 16 matching lines @@
   SamplingHeapProfiler* const profiler_;
   Heap* const heap_;
   base::RandomNumberGenerator* const random_;
   uint64_t const rate_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PROFILER_SAMPLING_HEAP_PROFILER_H_