Oilpan: Trace Heap memory statistics more often.

Source/platform/heap/ThreadState.cpp

Index: Source/platform/heap/ThreadState.cpp
diff --git a/Source/platform/heap/ThreadState.cpp b/Source/platform/heap/ThreadState.cpp
index 73afe55fb9d405a2dd345e901dbcd85afe6609e6..d23f76e4403365536fe35a7a5996af4d68392844 100644
--- a/Source/platform/heap/ThreadState.cpp
+++ b/Source/platform/heap/ThreadState.cpp
@@ -652,14 +652,7 @@ void ThreadState::scheduleGCIfNeeded()
         return;
     ASSERT(!sweepForbidden());
 
-#if ENABLE(GC_PROFILING)
-    // These values are divided by 1024 to avoid overflow in practical cases (TRACE_COUNTER values are 32-bit ints).
-    // They are capped to INT_MAX just in case.
-    TRACE_COUNTER1("blink_gc", "Heap::estimatedLiveObjectSizeKB", std::min(Heap::estimatedLiveObjectSize() / 1024, static_cast<size_t>(INT_MAX)));
-    TRACE_COUNTER1("blink_gc", "Heap::allocatedObjectSizeKB", std::min(Heap::allocatedObjectSize() / 1024, static_cast<size_t>(INT_MAX)));
-    TRACE_COUNTER1("blink_gc", "Heap::markedObjectSizeKB", std::min(Heap::markedObjectSize() / 1024, static_cast<size_t>(INT_MAX)));
-    TRACE_COUNTER1("blink_gc", "Partitions::totalSizeOfCommittedPagesKB", std::min(WTF::Partitions::totalSizeOfCommittedPages() / 1024, static_cast<size_t>(INT_MAX)));
-#endif
+    Heap::reportMemoryUsageForTracing();
 
     if (shouldForceConservativeGC()) {
         Heap::collectGarbage(HeapPointersOnStack, GCWithoutSweep, Heap::ConservativeGC);
@@ -1099,6 +1092,8 @@ void ThreadState::completeSweep()
 
 void ThreadState::postSweep()
 {
+    Heap::reportMemoryUsageForTracing();
+
     if (isMainThread()) {
         // At the point where the main thread finishes lazy sweeping,
         // we estimate the live object size. Heap::markedObjectSize()