Remove unused isolate parameter from NumberToSize and TryNumberToSize

src/heap/array-buffer-tracker-inl.h

 // Copyright 2016 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.
 
 #include "src/conversions-inl.h"
 #include "src/heap/array-buffer-tracker.h"
 #include "src/heap/heap.h"
 #include "src/objects.h"
 
 namespace v8 {
 namespace internal {
 
 void ArrayBufferTracker::RegisterNew(Heap* heap, JSArrayBuffer* buffer) {
   void* data = buffer->backing_store();
   if (!data) return;
 
-  size_t length = NumberToSize(heap->isolate(), buffer->byte_length());
+  size_t length = NumberToSize(buffer->byte_length());
   Page* page = Page::FromAddress(buffer->address());
   {
     base::LockGuard<base::Mutex> guard(page->mutex());
     LocalArrayBufferTracker* tracker = page->local_tracker();
     if (tracker == nullptr) {
       page->AllocateLocalTracker();
       tracker = page->local_tracker();
     }
     DCHECK_NOT_NULL(tracker);
     tracker->Add(buffer, length);
@@ skipping 31 matching lines @@
   TrackingData::iterator it = array_buffers_.find(key);
   // Check that we indeed find a key to remove.
   DCHECK(it != array_buffers_.end());
   Value value = it->second;
   array_buffers_.erase(it);
   return value;
 }
 
 }  // namespace internal
 }  // namespace v8