Move platform abstraction to base library

src/heap-inl.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_INL_H_
 #define V8_HEAP_INL_H_
 
 #include <cmath>
 
+#include "src/base/platform/platform.h"
 #include "src/cpu-profiler.h"
 #include "src/heap.h"
 #include "src/heap-profiler.h"
 #include "src/isolate.h"
 #include "src/list-inl.h"
 #include "src/objects.h"
-#include "src/platform.h"
 #include "src/store-buffer.h"
 #include "src/store-buffer-inl.h"
 
 namespace v8 {
 namespace internal {
 
 void PromotionQueue::insert(HeapObject* target, int size) {
   if (emergency_stack_ != NULL) {
     emergency_stack_->Add(Entry(target, size));
     return;
@@ skipping 778 matching lines @@
 
 
 double GCTracer::SizeOfHeapObjects() {
   return (static_cast<double>(heap_->SizeOfObjects())) / MB;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_INL_H_