Revert of cc: Use worker context for one-copy tile initialization.

ui/compositor/test/in_process_context_factory.cc

Index: ui/compositor/test/in_process_context_factory.cc
diff --git a/ui/compositor/test/in_process_context_factory.cc b/ui/compositor/test/in_process_context_factory.cc
index 942947d5b1b020f3ebfcfe21cc7cf2097d2067cb..13ddd907528859088678baa0f3030f96334fb2b1 100644
--- a/ui/compositor/test/in_process_context_factory.cc
+++ b/ui/compositor/test/in_process_context_factory.cc
@@ -41,11 +41,9 @@
 // GL surface.
 class DirectOutputSurface : public cc::OutputSurface {
  public:
-  DirectOutputSurface(
-      const scoped_refptr<cc::ContextProvider>& context_provider,
-      const scoped_refptr<cc::ContextProvider>& worker_context_provider)
-      : cc::OutputSurface(context_provider, worker_context_provider),
-        weak_ptr_factory_(this) {}
+  explicit DirectOutputSurface(
+      const scoped_refptr<cc::ContextProvider>& context_provider)
+      : cc::OutputSurface(context_provider), weak_ptr_factory_(this) {}
 
   ~DirectOutputSurface() override {}
 
@@ -112,19 +110,16 @@
       InProcessContextProvider::Create(attribs, &gpu_memory_buffer_manager_,
                                        &image_factory_,
                                        compositor->widget(), "UICompositor");
-  scoped_refptr<InProcessContextProvider> worker_context_provider =
-      InProcessContextProvider::CreateOffscreen(&gpu_memory_buffer_manager_,
-                                                &image_factory_);
 
   scoped_ptr<cc::OutputSurface> real_output_surface;
 
   if (use_test_surface_) {
     bool flipped_output_surface = false;
     real_output_surface = make_scoped_ptr(new cc::PixelTestOutputSurface(
-        context_provider, worker_context_provider, flipped_output_surface));
+        context_provider, flipped_output_surface));
   } else {
-    real_output_surface = make_scoped_ptr(
-        new DirectOutputSurface(context_provider, worker_context_provider));
+    real_output_surface =
+        make_scoped_ptr(new DirectOutputSurface(context_provider));
   }
 
   if (surface_manager_) {
@@ -134,9 +129,9 @@
             GetSharedBitmapManager(), GetGpuMemoryBufferManager(),
             compositor->GetRendererSettings(), compositor->task_runner()));
     scoped_ptr<cc::SurfaceDisplayOutputSurface> surface_output_surface(
-        new cc::SurfaceDisplayOutputSurface(
-            surface_manager_, compositor->surface_id_allocator(),
-            context_provider, worker_context_provider));
+        new cc::SurfaceDisplayOutputSurface(surface_manager_,
+                                            compositor->surface_id_allocator(),
+                                            context_provider));
     display_client->set_surface_output_surface(surface_output_surface.get());
     surface_output_surface->set_display_client(display_client.get());