add interface to start first run when voice interaction oobe is completed

BUG=b:38123645
TEST=First run tutorial is started after voice interaction
  OOBE completed broadcast.

Review-Url: https://codereview.chromium.org/2881283002
Cr-Commit-Position: refs/heads/master@{#472188}

chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_arc_home_service.cc

@@ -12,6 +12,7 @@
 #include "base/logging.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/chromeos/first_run/first_run_controller.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
@@ -111,6 +112,11 @@ void ArcVoiceInteractionArcHomeService::GetVoiceInteractionStructure(
       base::Bind(&RequestVoiceInteractionStructureCallback, callback));
 }
 
+void ArcVoiceInteractionArcHomeService::OnVoiceInteractionOobeSetupComplete() {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  chromeos::FirstRunController::Start();
+}
+
 // static
 mojom::VoiceInteractionStructurePtr
 ArcVoiceInteractionArcHomeService::CreateVoiceInteractionStructureForTesting(

chrome/browser/chromeos/arc/voice_interaction/arc_voice_interaction_arc_home_service.h

@@ -34,6 +34,7 @@ class ArcVoiceInteractionArcHomeService
   // Gets view hierarchy from current focused app and send it to ARC.
   void GetVoiceInteractionStructure(
       const GetVoiceInteractionStructureCallback& callback) override;
+  void OnVoiceInteractionOobeSetupComplete() override;
 
   static mojom::VoiceInteractionStructurePtr
   CreateVoiceInteractionStructureForTesting(

components/arc/common/voice_interaction_arc_home.mojom

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
-// Next MinVersion: 1
+// Next MinVersion: 2
 
 module arc.mojom;
 
@@ -50,12 +50,16 @@ struct VoiceInteractionStructure {
 };
 
 // Handles voice interaction queries from Android.
-// Next method ID: 1
+// Next method ID: 3
 interface VoiceInteractionArcHomeHost {
   // Returns view hierarchy of current window represented as
   // VoiceInteractionStructure. Returns empty if the request
   // fails.
   GetVoiceInteractionStructure@1() => (VoiceInteractionStructure? structure);
+
+  // Notifies VoiceInteractionArcHomeHost that voice interaction OOBE setup
+  // is done.
+  [MinVersion=1] OnVoiceInteractionOobeSetupComplete@2();
 };
 
 // Connects with ArcHome.