Enable heap compaction on all 'container' arenas.

third_party/WebKit/Source/platform/heap/HeapCompact.h

 // Copyright 2016 The Chromium 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 HeapCompact_h
 #define HeapCompact_h
 
 #include "platform/PlatformExport.h"
 #include "platform/heap/BlinkGC.h"
 #include "platform/wtf/DataLog.h"
@@ skipping 93 matching lines @@
 
   // Notify heap compaction that object at |from| has been relocated to.. |to|.
   // (Called by the sweep compaction pass.)
   void Relocate(Address from, Address to);
 
   // For unit testing only: arrange for a compaction GC to be triggered
   // next time a non-conservative GC is run. Sets the compact-next flag
   // to the new value, returning old.
   static bool ScheduleCompactionGCForTesting(bool);
 
+  // Test-only: verify that one or more of the vector arenas are
+  // in the process of being compacted.
+  bool IsCompactingVectorArenas() {
+    for (int i = BlinkGC::kVector1ArenaIndex; i <= BlinkGC::kVector4ArenaIndex;
+         ++i) {
+      if (IsCompactingArena(i))
+        return true;
+    }
+    return false;
+  }
+
  private:
   class MovableObjectFixups;
 
   HeapCompact();
 
   // Sample the amount of fragmentation and heap memory currently residing
   // on the freelists of the arenas we're able to compact. The computed
   // numbers will be subsequently used to determine if a heap compaction
   // is on order (shouldCompact().)
   void UpdateHeapResidency(ThreadState*);
@@ skipping 60 matching lines @@
 #if DEBUG_HEAP_FREELIST == 2
 #define LOG_HEAP_FREELIST_VERBOSE(msg, ...) \
   LOG_HEAP_COMPACTION_INTERNAL(msg, ##__VA_ARGS__)
 #else
 #define LOG_HEAP_FREELIST_VERBOSE(msg, ...) \
   do {                                      \
   } while (0)
 #endif
 
 #endif  // HeapCompact_h