Use incremental marking deque in idle notification.

src/heap/mark-compact.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/base/atomicops.h"
 #include "src/base/bits.h"
 #include "src/code-stubs.h"
 #include "src/compilation-cache.h"
@@ skipping 1926 matching lines @@
   ProcessMarkingDeque();
 }
 
 
 void MarkCompactCollector::MarkAllocationSite(AllocationSite* site) {
   MarkBit mark_bit = Marking::MarkBitFrom(site);
   SetMark(site, mark_bit);
 }
 
 
-bool MarkCompactCollector::IsMarkingDequeEmpty() {
-  return marking_deque_.IsEmpty();
-}
-
-
 void MarkCompactCollector::MarkRoots(RootMarkingVisitor* visitor) {
   // Mark the heap roots including global variables, stack variables,
   // etc., and all objects reachable from them.
   heap()->IterateStrongRoots(visitor, VISIT_ONLY_STRONG);
 
   // Handle the string table specially.
   MarkStringTable(visitor);
 
   MarkWeakObjectToCodeTable();
 
@@ skipping 2449 matching lines @@
   SlotsBuffer* buffer = *buffer_address;
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 }
 }  // namespace v8::internal