Remove static thread pointers from CC

cc/tiled_layer_impl_unittest.cc

Index: cc/tiled_layer_impl_unittest.cc
diff --git a/cc/tiled_layer_impl_unittest.cc b/cc/tiled_layer_impl_unittest.cc
index 1c6fd8b5da79f12c1fb3625e325a9abbc39491c7..d8db1681af1df4d05d4269c05b9df28780385a20 100644
--- a/cc/tiled_layer_impl_unittest.cc
+++ b/cc/tiled_layer_impl_unittest.cc
@@ -46,8 +46,6 @@ static scoped_ptr<TiledLayerImpl> createLayer(const IntSize& tileSize, const Int
 
 TEST(TiledLayerImplTest, emptyQuadList)
 {
-    DebugScopedSetImplThread scopedImplThread;
-
     const IntSize tileSize(90, 90);
     const int numTilesX = 8;
     const int numTilesY = 4;
@@ -101,8 +99,6 @@ TEST(TiledLayerImplTest, emptyQuadList)
 
 TEST(TiledLayerImplTest, checkerboarding)
 {
-    DebugScopedSetImplThread scopedImplThread;
-
     const IntSize tileSize(10, 10);
     const int numTilesX = 2;
     const int numTilesY = 2;
@@ -162,8 +158,6 @@ static void getQuads(QuadList& quads, SharedQuadStateList& sharedStates, IntSize
 
 static void coverageVisibleRectOnTileBoundaries(LayerTilingData::BorderTexelOption borders)
 {
-    DebugScopedSetImplThread scopedImplThread;
-
     IntSize layerSize(1000, 1000);
     QuadList quads;
     SharedQuadStateList sharedStates;
@@ -174,8 +168,6 @@ WITH_AND_WITHOUT_BORDER_TEST(coverageVisibleRectOnTileBoundaries);
 
 static void coverageVisibleRectIntersectsTiles(LayerTilingData::BorderTexelOption borders)
 {
-    DebugScopedSetImplThread scopedImplThread;
-
     // This rect intersects the middle 3x3 of the 5x5 tiles.
     IntPoint topLeft(65, 73);
     IntPoint bottomRight(182, 198);
@@ -191,8 +183,6 @@ WITH_AND_WITHOUT_BORDER_TEST(coverageVisibleRectIntersectsTiles);
 
 static void coverageVisibleRectIntersectsBounds(LayerTilingData::BorderTexelOption borders)
 {
-    DebugScopedSetImplThread scopedImplThread;
-
     IntSize layerSize(220, 210);
     IntRect visibleContentRect(IntPoint(), layerSize);
     QuadList quads;
@@ -204,8 +194,6 @@ WITH_AND_WITHOUT_BORDER_TEST(coverageVisibleRectIntersectsBounds);
 
 TEST(TiledLayerImplTest, textureInfoForLayerNoBorders)
 {
-    DebugScopedSetImplThread scopedImplThread;
-
     IntSize tileSize(50, 50);
     IntSize layerSize(250, 250);
     QuadList quads;
@@ -225,8 +213,6 @@ TEST(TiledLayerImplTest, textureInfoForLayerNoBorders)
 
 TEST(TiledLayerImplTest, tileOpaqueRectForLayerNoBorders)
 {
-    DebugScopedSetImplThread scopedImplThread;
-
     IntSize tileSize(50, 50);
     IntSize layerSize(250, 250);
     QuadList quads;