Delete dead store buffer verification code and code that changes the store buffer in debug mode.

src/heap/heap.h

 // Copyright 2012 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_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 
 #include "src/allocation.h"
@@ skipping 977 matching lines @@
 
 #ifdef VERIFY_HEAP
   // Verify the heap is in its normal state before or after a GC.
   void Verify();
 #endif
 
 #ifdef DEBUG
   void Print();
   void PrintHandles();
 
-  void OldPointerSpaceCheckStoreBuffer();
-  void MapSpaceCheckStoreBuffer();
-  void LargeObjectSpaceCheckStoreBuffer();
-
   // Report heap statistics.
   void ReportHeapStatistics(const char* title);
   void ReportCodeStatistics(const char* title);
 #endif
 
   // Zapping is needed for verify heap, and always done in debug builds.
   static inline bool ShouldZapGarbage() {
 #ifdef DEBUG
     return true;
 #else
@@ skipping 1616 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_H_