Remove unused features for in-process GL contexts.

cc/test/pixel_test.cc

Index: cc/test/pixel_test.cc
diff --git a/cc/test/pixel_test.cc b/cc/test/pixel_test.cc
index 58e556437b1b07a1e5fc719f248299864b80736d..f33a6bf36e17da9762d402f6b0697c3331550446 100644
--- a/cc/test/pixel_test.cc
+++ b/cc/test/pixel_test.cc
@@ -124,9 +124,12 @@ void PixelTest::SetUpGLRenderer(bool use_skia_gpu_backend,
                                 bool flipped_output_surface) {
   enable_pixel_output_.reset(new gfx::DisableNullDrawGLBindings);
 
+  scoped_refptr<TestInProcessContextProvider> compositor(
+      new TestInProcessContextProvider(nullptr));
+  scoped_refptr<TestInProcessContextProvider> worker(
+      new TestInProcessContextProvider(compositor.get()));
   output_surface_.reset(new PixelTestOutputSurface(
-      new TestInProcessContextProvider, new TestInProcessContextProvider,
-      flipped_output_surface));
+      std::move(compositor), std::move(worker), flipped_output_surface));
   output_surface_->BindToClient(output_surface_client_.get());
 
   shared_bitmap_manager_.reset(new TestSharedBitmapManager);