Revert of Move collectGarbage* methods to ThreadState

third_party/WebKit/Source/platform/scroll/ScrollableAreaTest.cpp

Index: third_party/WebKit/Source/platform/scroll/ScrollableAreaTest.cpp
diff --git a/third_party/WebKit/Source/platform/scroll/ScrollableAreaTest.cpp b/third_party/WebKit/Source/platform/scroll/ScrollableAreaTest.cpp
index bcaab58e084dee563fe247b7fe74b66f3c75b24a..8d079f6f34083282fec2d59fe6c859b675af797f 100644
--- a/third_party/WebKit/Source/platform/scroll/ScrollableAreaTest.cpp
+++ b/third_party/WebKit/Source/platform/scroll/ScrollableAreaTest.cpp
@@ -74,7 +74,7 @@
     EXPECT_TRUE(scrollbar->thumbNeedsRepaint());
 
     // Forced GC in order to finalize objects depending on the mock object.
-    ThreadState::current()-> collectAllGarbage();
+    ThreadHeap::collectAllGarbage();
 }
 
 TEST_F(ScrollableAreaTest, ScrollbarGraphicsLayerInvalidation)
@@ -95,7 +95,7 @@
     EXPECT_TRUE(graphicsLayer.hasTrackedPaintInvalidations());
 
     // Forced GC in order to finalize objects depending on the mock object.
-    ThreadState::current()-> collectAllGarbage();
+    ThreadHeap::collectAllGarbage();
 }
 
 TEST_F(ScrollableAreaTest, InvalidatesNonCompositedScrollbarsWhenThumbMoves)
@@ -127,7 +127,7 @@
     scrollableArea->clearNeedsPaintInvalidationForScrollControls();
 
     // Forced GC in order to finalize objects depending on the mock object.
-    ThreadState::current()-> collectAllGarbage();
+    ThreadHeap::collectAllGarbage();
 }
 
 TEST_F(ScrollableAreaTest, InvalidatesCompositedScrollbarsIfPartsNeedRepaint)
@@ -194,7 +194,7 @@
     EXPECT_FALSE(verticalScrollbar->thumbNeedsRepaint());
 
     // Forced GC in order to finalize objects depending on the mock object.
-    ThreadState::current()-> collectAllGarbage();
+    ThreadHeap::collectAllGarbage();
 }
 
 TEST_F(ScrollableAreaTest, RecalculatesScrollbarOverlayIfBackgroundChanges)