base: Make RefCountedBytes::TakeVector return ref ptr instead of raw ptr

base/memory/ref_counted_memory.h

 // Copyright (c) 2012 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 BASE_MEMORY_REF_COUNTED_MEMORY_H_
 #define BASE_MEMORY_REF_COUNTED_MEMORY_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 63 matching lines @@
 
   // Constructs a RefCountedBytes object by _copying_ from |initializer|.
   explicit RefCountedBytes(const std::vector<unsigned char>& initializer);
 
   // Constructs a RefCountedBytes object by copying |size| bytes from |p|.
   RefCountedBytes(const unsigned char* p, size_t size);
 
   // Constructs a RefCountedBytes object by performing a swap. (To non
   // destructively build a RefCountedBytes, use the constructor that takes a
   // vector.)
-  static RefCountedBytes* TakeVector(std::vector<unsigned char>* to_destroy);
+  static scoped_refptr<RefCountedBytes> TakeVector(
+      std::vector<unsigned char>* to_destroy);
 
   // Overridden from RefCountedMemory:
   const unsigned char* front() const override;
   size_t size() const override;
 
   const std::vector<unsigned char>& data() const { return data_; }
   std::vector<unsigned char>& data() { return data_; }
 
  private:
   ~RefCountedBytes() override;
@@ skipping 25 matching lines @@
   ~RefCountedString() override;
 
   std::string data_;
 
   DISALLOW_COPY_AND_ASSIGN(RefCountedString);
 };
 
 }  // namespace base
 
 #endif  // BASE_MEMORY_REF_COUNTED_MEMORY_H_