Open the launcher when hotword is triggered in always-on mode.

chrome/browser/ui/app_list/app_list_service_impl.cc

 // Copyright 2013 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/app_list/app_list_service_impl.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 312 matching lines @@
   view_delegate_->SetProfile(NULL);
 }
 
 void AppListServiceImpl::Show() {
   profile_loader_->LoadProfileInvalidatingOtherLoads(
       GetProfilePath(profile_store_->GetUserDataDir()),
       base::Bind(&AppListServiceImpl::ShowForProfile,
                  weak_factory_.GetWeakPtr()));
 }
 
+void AppListServiceImpl::ShowForVoiceSearch(Profile* profile) {
+  ShowForProfile(profile);
+  app_list::AppListViewDelegate* delegate =
+      implicit_cast<app_list::AppListViewDelegate*>(view_delegate_.get());

[tapted, 2014/10/09 03:37:00]

you shouldn't need the implicit cast after a rebase

[Anand Mistry (off Chromium), 2014/10/13 21:51:59]

Done.

+  delegate->ToggleSpeechRecognition();
+}
+
 void AppListServiceImpl::AutoShowForProfile(Profile* requested_profile) {
   if (local_state_->GetInt64(prefs::kAppListEnableTime) != 0) {
     // User has not yet discovered the app launcher. Update the enable method to
     // indicate this. It will then be recorded in UMA.
     local_state_->SetInteger(prefs::kAppListEnableMethod,
                              ENABLE_SHOWN_UNDISCOVERED);
   }
   ShowForProfile(requested_profile);
 }
 
@@ skipping 43 matching lines @@
   if (!base::MessageLoop::current())
     return;  // In a unit test.
 
   // Send app list usage stats after a delay.
   const int kSendUsageStatsDelay = 5;
   base::MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&AppListServiceImpl::SendAppListStats),
       base::TimeDelta::FromSeconds(kSendUsageStatsDelay));
 }