Changed RefCountedStaticMemory() to accept a void pointer.

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 <string>
 #include <vector>
 
@@ skipping 12 matching lines @@
   // Retrieves a pointer to the beginning of the data we point to. If the data
   // is empty, this will return NULL.
   virtual const unsigned char* front() const = 0;
 
   // Size of the memory pointed to.
   virtual size_t size() const = 0;
 
   // Returns true if |other| is byte for byte equal.
   bool Equals(const scoped_refptr<RefCountedMemory>& other) const;
 
+  // Handy method to simplify calling front() with a reinterpret_cast.
+  template<typename T> const T* front_as() const {
+    return reinterpret_cast<const T*>(front());
+  }
+
  protected:
   friend class base::RefCountedThreadSafe<RefCountedMemory>;
   RefCountedMemory();
   virtual ~RefCountedMemory();
 };
 
 // An implementation of RefCountedMemory, where the ref counting does not
 // matter.
 class BASE_EXPORT RefCountedStaticMemory : public RefCountedMemory {
  public:
   RefCountedStaticMemory()
       : data_(NULL), length_(0) {}
-  RefCountedStaticMemory(const unsigned char* data, size_t length)
-      : data_(length ? data : NULL), length_(length) {}
+  RefCountedStaticMemory(const void* data, size_t length)
+      : data_(static_cast<const unsigned char*>(length ? data : NULL)),
+        length_(length) {}
 
   // Overridden from RefCountedMemory:
   virtual const unsigned char* front() const OVERRIDE;
   virtual size_t size() const OVERRIDE;
 
  private:
   virtual ~RefCountedStaticMemory();
 
   const unsigned char* data_;
   size_t length_;
@@ skipping 72 matching lines @@
 
   unsigned char* data_;
   size_t length_;
 
   DISALLOW_COPY_AND_ASSIGN(RefCountedMallocedMemory);
 };
 
 }  // namespace base
 
 #endif  // BASE_MEMORY_REF_COUNTED_MEMORY_H_