gpu: Use mojom API for recording log messages to the host.

services/ui/ws/gpu_host.cc

 // Copyright 2016 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 "services/ui/ws/gpu_host.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/memory/shared_memory.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 175 matching lines @@
   }
 #else
   NOTREACHED();
 #endif
 }
 
 void GpuHost::StoreShaderToDisk(int32_t client_id,
                                 const std::string& key,
                                 const std::string& shader) {}
 
+void GpuHost::RecordLogMessage(int32_t severity,
+                               const std::string& header,
+                               const std::string& message) {}
+
 }  // namespace ws
 }  // namespace ui