Reland "Make sure that memory reducer makes progress in incremental marking""

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index d74d9cff958dfc1e316b425f4138e662de11f345..947b233e2492d08efb8e1661fd0ee5d350d66436 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -840,6 +840,8 @@ class Heap {
   // Notify the heap that a context has been disposed.
   int NotifyContextDisposed(bool dependant_context);
 
+  void FinalizeIncrementalMarkingIfComplete(const char* comment);

[Michael Lippautz, 2015/09/03 15:01:49]

nit: There's a section for incremental marking around line ~1277.

[ulan_google, 2015/09/03 15:07:00]

Done.

+
   inline void increment_scan_on_scavenge_pages() {
     scan_on_scavenge_pages_++;
     if (FLAG_gc_verbose) {
@@ -1036,6 +1038,8 @@ class Heap {
   bool HasHighFragmentation();
   bool HasHighFragmentation(intptr_t used, intptr_t committed);
 
+  bool ShouldOptimizeForMemoryUsage() { return optimize_for_memory_usage_; }
+
   // ===========================================================================
   // Initialization. ===========================================================
   // ===========================================================================