Resolves layering violation in SynchronousCompositorHost creation

content/browser/renderer_host/render_widget_host_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <tuple>
 
@@ skipping 854 matching lines @@
 // Unable to include render_widget_host_view_mac.h and compile.
 #if !defined(OS_MACOSX)
 // Tests setting background transparency.
 TEST_F(RenderWidgetHostTest, Background) {
   std::unique_ptr<RenderWidgetHostViewBase> view;
 #if defined(USE_AURA)
   view.reset(new RenderWidgetHostViewAura(host_.get(), false));
   // TODO(derat): Call this on all platforms: http://crbug.com/102450.
   view->InitAsChild(NULL);
 #elif defined(OS_ANDROID)
-  view.reset(new RenderWidgetHostViewAndroid(host_.get(), NULL));
+  view.reset(new RenderWidgetHostViewAndroid(host_.get(), nullptr, nullptr));
 #endif
   host_->SetView(view.get());
 
   EXPECT_TRUE(view->GetBackgroundOpaque());
   view->SetBackgroundColor(SK_ColorTRANSPARENT);
   EXPECT_FALSE(view->GetBackgroundOpaque());
 
   const IPC::Message* set_background =
       process_->sink().GetUniqueMessageMatching(
           ViewMsg_SetBackgroundOpaque::ID);
@@ skipping 821 matching lines @@
                                       ui::LatencyInfo());
 
 
   // Tests RWHI::ForwardWheelEventWithLatencyInfo().
   SimulateWheelEventWithLatencyInfo(-5, 0, 0, true, ui::LatencyInfo());
 
   ASSERT_FALSE(host_->input_router()->HasPendingEvents());
 }
 
 }  // namespace content