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

services/ui/gpu/gpu_service.h

Index: services/ui/gpu/gpu_service.h
diff --git a/services/ui/gpu/gpu_service.h b/services/ui/gpu/gpu_service.h
index 9faf51350aeb93401de147f8bf8d0db7c376d145..65253164e6b6ac3b2ebf2cad070d9e7d1315ca57 100644
--- a/services/ui/gpu/gpu_service.h
+++ b/services/ui/gpu/gpu_service.h
@@ -75,9 +75,17 @@ class GpuService : public gpu::GpuChannelManagerDelegate,
     return gpu_feature_info_;
   }
 
+  void set_in_host_process(bool in_host_process) {
+    in_host_process_ = in_host_process;
+  }
+
  private:
   friend class GpuMain;
 
+  void RecordLogMessage(int severity,
+                        size_t message_start,
+                        const std::string& message);
+
   gpu::SyncPointManager* sync_point_manager() { return sync_point_manager_; }
 
   gpu::gles2::MailboxManager* mailbox_manager() {
@@ -164,6 +172,9 @@ class GpuService : public gpu::GpuChannelManagerDelegate,
   std::unique_ptr<gpu::SyncPointManager> owned_sync_point_manager_;
   gpu::SyncPointManager* sync_point_manager_ = nullptr;
 
+  // Whether this is running in the same process as the gpu host.
+  bool in_host_process_ = false;
+
   mojo::BindingSet<mojom::GpuService> bindings_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuService);