Add InProcessContextProvider and update InProcessCommandBuffer

cc/test/test_in_process_context_provider.cc

Index: cc/test/test_in_process_context_provider.cc
diff --git a/cc/test/test_in_process_context_provider.cc b/cc/test/test_in_process_context_provider.cc
index 4621eb7f59b3ebcd752df8f9ee19a1bdf45451e7..042be7cf12448146a939cfb77f59f8692f85cde8 100644
--- a/cc/test/test_in_process_context_provider.cc
+++ b/cc/test/test_in_process_context_provider.cc
@@ -45,7 +45,7 @@ std::unique_ptr<gpu::GLInProcessContext> CreateTestInProcessContext(
 
   std::unique_ptr<gpu::GLInProcessContext> context =
       base::WrapUnique(gpu::GLInProcessContext::Create(
-          nullptr, nullptr, is_offscreen, gfx::kNullAcceleratedWidget,
+          nullptr, nullptr, is_offscreen, gpu::kNullSurfaceHandle,
           shared_context, attribs, gpu::SharedMemoryLimits(),
           gpu_memory_buffer_manager, image_factory, std::move(task_runner)));