Remove reserveCapacity call from SharedBuffer::mergeSegmentsIntoBuffer().

Source/platform/SharedBuffer.cpp

 /*
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 294 matching lines @@
         }
         ASSERT(position == clone->size());
     }
     return clone.release();
 }
 
 void SharedBuffer::mergeSegmentsIntoBuffer() const
 {
     unsigned bufferSize = m_buffer.size();
     if (m_size > bufferSize) {
-        m_buffer.reserveCapacity(m_size);
         unsigned bytesLeft = m_size - bufferSize;
         for (unsigned i = 0; i < m_segments.size(); ++i) {
             unsigned bytesToCopy = std::min(bytesLeft, segmentSize);
             m_buffer.append(m_segments[i], bytesToCopy);
             bytesLeft -= bytesToCopy;
             freeSegment(m_segments[i]);
         }
         m_segments.clear();
     }
 }
@@ skipping 81 matching lines @@
     mergeSegmentsIntoBuffer();
     m_buffer.unlock();
 }
 
 bool SharedBuffer::isLocked() const
 {
     return m_buffer.isLocked();
 }
 
 } // namespace blink