Fix compilation with SK_ENABLE_INST_COUNT=1

src/doc/SkDocument.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDocument.h"
 #include "SkStream.h"
 
-SK_DEFINE_INST_COUNT(SkDocument)
-
 SkDocument::SkDocument(SkWStream* stream, void (*doneProc)(SkWStream*, bool)) {
     fStream = stream;   // we do not own this object.
     fDoneProc = doneProc;
     fState = kBetweenPages_State;
 }
 
 SkDocument::~SkDocument() {
     this->close();
 }
 
@@ skipping 65 matching lines @@
     this->onAbort();
 
     fState = kClosed_State;
     if (fDoneProc) {
         fDoneProc(fStream, true);
     }
     // we don't own the stream, but we mark it NULL since we can
     // no longer write to it.
     fStream = NULL;
 }