With V2 hotwording enabled, don't inform the start page that the launcher has opened.

chrome/browser/ui/webui/app_list/start_page_handler.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/webui/app_list/start_page_handler.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 177 matching lines @@
                                  extensions::ExtensionRegistry::ENABLED);
   if (hotword_extension &&
       hotword_extension->version()->CompareTo(
           base::Version(kOldHotwordExtensionVersionString)) <= 0) {
     web_ui()->CallJavascriptFunction(
         "appList.startPage.setNaclArch",
         base::StringValue(omaha_client::OmahaQueryParams::GetNaclArch()));
   }
 #endif
 
-  if (!app_list::switches::IsExperimentalAppListEnabled()) {
-    // If experimental hotwording is enabled, don't enable hotwording in the
-    // start page, since the hotword extension is taking care of this.
-    bool hotword_enabled = service->HotwordEnabled() &&
-        !HotwordService::IsExperimentalHotwordingEnabled();
+  // If v2 hotwording is enabled, don't tell the start page that the app list is
+  // being shown. V2 hotwording doesn't use the start page for anything.
+  if (!app_list::switches::IsExperimentalAppListEnabled() &&
+      !HotwordService::IsExperimentalHotwordingEnabled()) {
     web_ui()->CallJavascriptFunction(
         "appList.startPage.onAppListShown",
-        base::FundamentalValue(hotword_enabled));
+        base::FundamentalValue(service->HotwordEnabled()));
   }
 }
 
 void StartPageHandler::HandleLaunchApp(const base::ListValue* args) {
   std::string app_id;
   CHECK(args->GetString(0, &app_id));
 
   Profile* profile = Profile::FromWebUI(web_ui());
   const extensions::Extension* app =
       extensions::ExtensionRegistry::Get(profile)
@@ skipping 51 matching lines @@
   else if (state_string == "NETWORK_ERROR")
     new_state = SPEECH_RECOGNITION_NETWORK_ERROR;
 
   StartPageService* service =
       StartPageService::Get(Profile::FromWebUI(web_ui()));
   if (service)
     service->OnSpeechRecognitionStateChanged(new_state);
 }
 
 }  // namespace app_list