Add InProcessContextProvider and update InProcessCommandBuffer

content/browser/renderer_host/render_widget_host_view_mac_unittest.mm

Index: content/browser/renderer_host/render_widget_host_view_mac_unittest.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac_unittest.mm b/content/browser/renderer_host/render_widget_host_view_mac_unittest.mm
index 50dcc692cf532adaf532fb822edb4e336c62e05b..c87c50dd24dd20def752c66af95453793699bf0f 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac_unittest.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac_unittest.mm
@@ -34,6 +34,7 @@
 #include "content/public/test/test_utils.h"
 #include "content/test/test_render_view_host.h"
 #include "gpu/ipc/common/gpu_messages.h"
+#include "gpu/ipc/service/image_transport_surface.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/gtest_mac.h"
@@ -254,6 +255,8 @@ class RenderWidgetHostViewMacTest : public RenderViewHostImplTestHarness {
 
   void SetUp() override {
     RenderViewHostImplTestHarness::SetUp();
+    gpu::ImageTransportSurface::SetAllowOSMesaForTesting(true);
+
     // TestRenderViewHost's destruction assumes that its view is a
     // TestRenderWidgetHostView, so store its view and reset it back to the
     // stored view in |TearDown()|.