cc: Remove cc::Thread and cc::ThreadImpl.

cc/layers/delegated_renderer_layer_impl_unittest.cc

Index: cc/layers/delegated_renderer_layer_impl_unittest.cc
diff --git a/cc/layers/delegated_renderer_layer_impl_unittest.cc b/cc/layers/delegated_renderer_layer_impl_unittest.cc
index 6d8d383850f637c4ad198ab2e3ba0de84d798fb1..6592a31630d65b35bcfabe8954ecb518ddec887f 100644
--- a/cc/layers/delegated_renderer_layer_impl_unittest.cc
+++ b/cc/layers/delegated_renderer_layer_impl_unittest.cc
@@ -33,7 +33,7 @@ namespace {
 class DelegatedRendererLayerImplTest : public testing::Test {
  public:
   DelegatedRendererLayerImplTest()
-      : proxy_(scoped_ptr<Thread>()),
+      : proxy_(),

[piman, 2013/06/18 17:56:25]

nit: remove redundant default initializer.

[danakj, 2013/06/18 18:00:31]

ah, okay. i thought maybe it is nice, because you can see proxy_ being used just
below in the initializer list, and this shows that it was initialized first
already.

         always_impl_thread_and_main_thread_blocked_(&proxy_) {
     LayerTreeSettings settings;
     settings.minimum_occlusion_tracking_size = gfx::Size();