chrome/browser/android/voice_search_tab_helper.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/android/voice_search_tab_helper.h"
   6
   7 #include "chrome/browser/google/google_util.h"
   8 #include "content/public/browser/render_view_host.h"
   9 #include "content/public/browser/web_contents.h"
  10 #include "jni/VoiceSearchTabHelper_jni.h"
  11 #include "webkit/common/webpreferences.h"
  12
  13 using content::WebContents;
  14
  15 // Register native methods
  16 bool RegisterVoiceSearchTabHelper(JNIEnv* env) {
  17   return RegisterNativesImpl(env);
  18 }
  19
  20 static void UpdateAutoplayStatus(JNIEnv* env,
  21                                  jobject obj,
  22                                  jobject j_web_contents) {
  23   WebContents* web_contents = WebContents::FromJavaWebContents(j_web_contents);
  24   content::RenderViewHost* host = web_contents->GetRenderViewHost();
  25   WebPreferences prefs = host->GetWebkitPreferences();
  26
  27   // In the case where media autoplay has been enabled by default (e.g. in
  28   // performance media tests) do not update it based on navigation changes.
  29   //
  30   // Note that GetWekitPreferences() is 'stateless'. It returns the default
  31   // webkit preferences configuration from command line switches.
  32   if (!prefs.user_gesture_required_for_media_playback)
  33     return;
  34
  35   prefs.user_gesture_required_for_media_playback =
  36       !google_util::IsGoogleSearchUrl(web_contents->GetLastCommittedURL());
  37   host->UpdateWebkitPreferences(prefs);
  38 }