Add MetalayerMode to the palette.

chrome/browser/ui/ash/palette_delegate_chromeos.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 "chrome/browser/ui/ash/palette_delegate_chromeos.h"
 
 #include "ash/accelerators/accelerator_controller_delegate_aura.h"
 #include "ash/aura/shell_port_classic.h"
 #include "ash/screenshot_delegate.h"
 #include "ash/shell.h"
@@ skipping 161 matching lines @@
   auto* screenshot_delegate = ash::ShellPortClassic::Get()
                                   ->accelerator_controller_delegate()
                                   ->screenshot_delegate();
   screenshot_delegate->HandleTakeScreenshotForAllRootWindows();
 }
 
 void PaletteDelegateChromeOS::TakePartialScreenshot(const base::Closure& done) {
   auto* screenshot_controller = ash::Shell::Get()->screenshot_controller();
 
   ash::ScreenshotDelegate* screenshot_delegate;
-  if (arc::ArcVoiceInteractionFrameworkService::IsVoiceInteractionEnabled() &&
-      arc::IsArcAllowedForProfile(profile_)) {
+  if (IsMetalayerSupported()) {
     // This is an experimental mode. It will be either taken out or grow
     // into a separate tool next to "Capture region".
     if (!voice_interaction_screenshot_delegate_) {
       voice_interaction_screenshot_delegate_ =
           base::MakeUnique<VoiceInteractionScreenshotDelegate>();
     }
     screenshot_delegate = voice_interaction_screenshot_delegate_.get();
   } else {
     screenshot_delegate = ash::ShellPortClassic::Get()
                               ->accelerator_controller_delegate()
                               ->screenshot_delegate();
   }
 
   screenshot_controller->set_pen_events_only(true);
   screenshot_controller->StartPartialScreenshotSession(
       screenshot_delegate, false /* draw_overlay_immediately */);
   screenshot_controller->set_on_screenshot_session_done(
       base::Bind(&PaletteDelegateChromeOS::OnPartialScreenshotDone,
                  weak_factory_.GetWeakPtr(), done));
 }
 
 void PaletteDelegateChromeOS::CancelPartialScreenshot() {
   ash::Shell::Get()->screenshot_controller()->CancelScreenshotSession();
 }
 
+bool PaletteDelegateChromeOS::IsMetalayerSupported() {
+  if (!arc::IsArcAllowedForProfile(profile_))
+    return false;
+
+  arc::ArcVoiceInteractionFrameworkService* service =
+      arc::ArcServiceManager::Get()
+          ->GetService<arc::ArcVoiceInteractionFrameworkService>();
+  return service && service->IsMetalayerSupported();
+}
+
+void PaletteDelegateChromeOS::ShowMetalayer(const base::Closure& closed) {
+  arc::ArcVoiceInteractionFrameworkService* service =
+      arc::ArcServiceManager::Get()
+          ->GetService<arc::ArcVoiceInteractionFrameworkService>();
+  if (!service) {
+    if (!closed.is_null())
+      closed.Run();
+    return;
+  }
+  service->ShowMetalayer(closed);
+}
+
+void PaletteDelegateChromeOS::HideMetalayer() {
+  arc::ArcVoiceInteractionFrameworkService* service =
+      arc::ArcServiceManager::Get()
+          ->GetService<arc::ArcVoiceInteractionFrameworkService>();
+  if (!service)
+    return;
+  service->HideMetalayer();
+}
+
 }  // namespace chromeos