[Blink Heap] Move isLowEndDevice to Memory Coordinator, attempt #3

third_party/WebKit/Source/platform/heap/HeapPage.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "platform/heap/HeapPage.h"
 
 #include "base/trace_event/process_memory_dump.h"
+#include "platform/MemoryCoordinator.h"
 #include "platform/ScriptForbiddenScope.h"
 #include "platform/heap/BlinkGCMemoryDumpProvider.h"
 #include "platform/heap/CallbackStack.h"
-#include "platform/heap/Heap.h"
 #include "platform/heap/MarkingVisitor.h"
 #include "platform/heap/PageMemory.h"
 #include "platform/heap/PagePool.h"
 #include "platform/heap/SafePoint.h"
 #include "platform/heap/ThreadState.h"
 #include "platform/tracing/TraceEvent.h"
 #include "platform/tracing/web_memory_allocator_dump.h"
 #include "platform/tracing/web_process_memory_dump.h"
 #include "public/platform/Platform.h"
 #include "wtf/Assertions.h"
@@ skipping 1170 matching lines @@
       // that memory on the freelist is zero filled.
       SET_MEMORY_INACCESSIBLE(headerAddress, size);
       headerAddress += size;
       continue;
     }
     if (startOfGap != headerAddress) {
       pageArena->addToFreeList(startOfGap, headerAddress - startOfGap);
 #if !ENABLE(ASSERT) && !defined(LEAK_SANITIZER) && !defined(ADDRESS_SANITIZER)
       // Discarding pages increases page faults and may regress performance.
       // So we enable this only on low-RAM devices.
-      if (ProcessHeap::isLowEndDevice())
+      if (MemoryCoordinator::isLowEndDevice())
         discardPages(startOfGap + sizeof(FreeListEntry), headerAddress);
 #endif
     }
     header->unmark();
     headerAddress += size;
     markedObjectSize += size;
     startOfGap = headerAddress;
   }
   if (startOfGap != payloadEnd()) {
     pageArena->addToFreeList(startOfGap, payloadEnd() - startOfGap);
 #if !ENABLE(ASSERT) && !defined(LEAK_SANITIZER) && !defined(ADDRESS_SANITIZER)
-    if (ProcessHeap::isLowEndDevice())
+    if (MemoryCoordinator::isLowEndDevice())
       discardPages(startOfGap + sizeof(FreeListEntry), payloadEnd());
 #endif
   }
 
   if (markedObjectSize)
     pageArena->getThreadState()->increaseMarkedObjectSize(markedObjectSize);
 }
 
 void NormalPage::makeConsistentForGC() {
   size_t markedObjectSize = 0;
@@ skipping 380 matching lines @@
 
   m_hasEntries = true;
   size_t index = hash(address);
   ASSERT(!(index & 1));
   Address cachePage = roundToBlinkPageStart(address);
   m_entries[index + 1] = m_entries[index];
   m_entries[index] = cachePage;
 }
 
 }  // namespace blink