Remove static thread pointers from CC

cc/nine_patch_layer_impl_unittest.cc

 // Copyright 2012 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.
 
 #include "config.h"
 
 #include "cc/nine_patch_layer_impl.h"
 
 #include "cc/append_quads_data.h"
 #include "cc/single_thread_proxy.h"
@@ skipping 10 matching lines @@
 using namespace cc;
 
 namespace {
 
 gfx::Rect ToRoundedIntRect(gfx::RectF rect_f) {
     return gfx::Rect(gfx::ToRoundedInt(rect_f.x()), gfx::ToRoundedInt(rect_f.y()), gfx::ToRoundedInt(rect_f.width()), gfx::ToRoundedInt(rect_f.height()));
 }
 
 TEST(NinePatchLayerImplTest, verifyDrawQuads)
 {
-    DebugScopedSetImplThread implThread;
-
     // Input is a 100x100 bitmap with a 40x50 aperture at x=20, y=30.
     // The bounds of the layer are set to 400x400, so the draw quads
     // generated should leave the border width (40) intact.
     MockQuadCuller quadCuller;
     gfx::Size bitmapSize(100, 100);
     gfx::Size layerSize(400, 400);
     gfx::Rect visibleContentRect(gfx::Point(), layerSize);
     gfx::Rect apertureRect(20, 30, 40, 50);
     gfx::Rect scaledApertureNonUniform(20, 30, 340, 350);
 
@@ skipping 42 matching lines @@
         gfx::RectF texRect = texQuad->uvRect();
         texRect.Scale(bitmapSize.width(), bitmapSize.height());
         texRemaining.Subtract(Region(ToRoundedIntRect(texRect)));
     }
     EXPECT_RECT_EQ(texRemaining.bounds(), apertureRect);
     Region apertureRegion(apertureRect);
     EXPECT_EQ(texRemaining, apertureRegion);
 }
 
 }