Plumb preamble log data from the hotword extension into the speech recognizer.

chrome/browser/ui/app_list/start_page_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_APP_LIST_START_PAGE_SERVICE_H_
 #define CHROME_BROWSER_UI_APP_LIST_START_PAGE_SERVICE_H_
 
 #include <stdint.h>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
 #include "base/time/default_clock.h"
 #include "chrome/browser/ui/app_list/speech_recognizer_delegate.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/app_list/speech_ui_model_observer.h"
 
+namespace content {
+struct SpeechRecognitionSessionPreamble;
+}
+
 namespace extensions {
 class Extension;
 }
 
 class Profile;
 
 namespace app_list {
 
 class RecommendedApps;
 class SpeechAuthHelper;
 class SpeechRecognizer;
 class StartPageObserver;
 
 // StartPageService collects data to be displayed in app list's start page
 // and hosts the start page contents.
 class StartPageService : public KeyedService,
                          public SpeechRecognizerDelegate {
  public:
   typedef std::vector<scoped_refptr<const extensions::Extension> >
       ExtensionList;
   // Gets the instance for the given profile.
   static StartPageService* Get(Profile* profile);
 
   void AddObserver(StartPageObserver* observer);
   void RemoveObserver(StartPageObserver* observer);
 
   void AppListShown();
   void AppListHidden();
-  void ToggleSpeechRecognition();
+  void ToggleSpeechRecognition(
+      const scoped_refptr<content::SpeechRecognitionSessionPreamble>& preamble);
 
   // Called when the WebUI has finished loading.
   void WebUILoaded();
 
   // Returns true if the hotword is enabled in the app-launcher.
   bool HotwordEnabled();
 
   // They return essentially the same web contents but might return NULL when
   // some flag disables the feature.
   content::WebContents* GetStartPageContents();
@@ skipping 62 matching lines @@
 #endif
 
   base::WeakPtrFactory<StartPageService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(StartPageService);
 };
 
 }  // namespace app_list
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_START_PAGE_SERVICE_H_