IME for Mus: Make InputMethodMus use the IME Mojo API.

services/ui/surfaces/display_compositor.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/surfaces/display_compositor.h"
 
 #include "cc/output/copy_output_request.h"
 #include "cc/output/output_surface.h"
 #include "cc/output/renderer_settings.h"
 #include "cc/output/texture_mailbox_deleter.h"
@@ skipping 54 matching lines @@
       new cc::DisplayScheduler(synthetic_begin_frame_source.get(),
                                task_runner_.get(), max_frames_pending));
 
   display_.reset(new cc::Display(
       nullptr /* bitmap_manager */, nullptr /* gpu_memory_buffer_manager */,
       cc::RendererSettings(), std::move(synthetic_begin_frame_source),
       std::move(display_output_surface), std::move(scheduler),
       base::MakeUnique<cc::TextureMailboxDeleter>(task_runner_.get())));
   display_->Initialize(this, surfaces_state_->manager(),
                        allocator_.client_id());
+  display_->SetVisible(true);
 }
 
 DisplayCompositor::~DisplayCompositor() {
   surfaces_state_->manager()->UnregisterSurfaceFactoryClient(
       allocator_.client_id());
   surfaces_state_->manager()->InvalidateSurfaceClientId(allocator_.client_id());
 }
 
 void DisplayCompositor::SubmitCompositorFrame(
     cc::CompositorFrame frame,
@@ skipping 42 matching lines @@
   // This notification is not relevant to our client outside of tests.
 }
 
 void DisplayCompositor::DisplayDidDrawAndSwap() {
   // This notification is not relevant to our client outside of tests. We
   // unblock the client from the DrawCallback when the surface is going to
   // be drawn.
 }
 
 }  // namespace ui