Remove static thread pointers from CC

cc/texture_layer_unittest.cc

Index: cc/texture_layer_unittest.cc
diff --git a/cc/texture_layer_unittest.cc b/cc/texture_layer_unittest.cc
index f413f27b073bed1dc5cebf6d1263020ffb23e34d..6e659789e6b0f4bbb3b3a1b9a79b0c843478b14f 100644
--- a/cc/texture_layer_unittest.cc
+++ b/cc/texture_layer_unittest.cc
@@ -10,6 +10,7 @@
 #include "cc/single_thread_proxy.h"
 #include "cc/texture_layer_impl.h"
 #include "cc/test/fake_layer_tree_host_client.h"
+#include "cc/thread.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -26,7 +27,7 @@ public:
     MockLayerImplTreeHost()
         : LayerTreeHost(&m_fakeClient, LayerTreeSettings())
     {
-        initialize();
+        initialize(scoped_ptr<Thread>(NULL));
     }
 
     MOCK_METHOD0(acquireLayerTextures, void());
@@ -97,10 +98,7 @@ TEST_F(TextureLayerTest, syncImplWhenDrawing)
     scoped_refptr<TextureLayer> testLayer = TextureLayer::create(0);
     ASSERT_TRUE(testLayer);
     scoped_ptr<TextureLayerImpl> implLayer;
-    {
-        DebugScopedSetImplThread setImplThread;
-        implLayer = TextureLayerImpl::create(1);
-    }
+    implLayer = TextureLayerImpl::create(1);
     ASSERT_TRUE(implLayer);
 
     EXPECT_CALL(*m_layerTreeHost, acquireLayerTextures()).Times(AnyNumber());
@@ -144,11 +142,6 @@ TEST_F(TextureLayerTest, syncImplWhenDrawing)
     testLayer->willModifyTexture();
     testLayer->setNeedsDisplayRect(dirtyRect);
     Mock::VerifyAndClearExpectations(m_layerTreeHost.get());
-
-    {
-        DebugScopedSetImplThread setImplThread;
-        delete implLayer.release();
-    }
 }
 
 TEST_F(TextureLayerTest, syncImplWhenRemovingFromTree)