*DRAFT* Move MediaDeviceIDSalt from chrome/ to components/ and use it in Android WebView.

chrome/common/pref_names.cc

 // Copyright (c) 2012 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/common/pref_names.h"
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/pref_font_webkit_names.h"
 
@@ skipping 1550 matching lines @@
 // Boolean that specifies whether to enable the Google Now Launcher extension.
 // Note: This is not the notifications component gated by ENABLE_GOOGLE_NOW.
 const char kGoogleNowLauncherEnabled[] = "google_now_launcher.enabled";
 
 // The default audio capture device used by the Media content setting.
 const char kDefaultAudioCaptureDevice[] = "media.default_audio_capture_device";
 
 // The default video capture device used by the Media content setting.
 const char kDefaultVideoCaptureDevice[] = "media.default_video_capture_Device";
 
-// The salt used for creating random MediaSource IDs.
-const char kMediaDeviceIdSalt[] = "media.device_id_salt";
-
 // The last used printer and its settings.
 const char kPrintPreviewStickySettings[] =
     "printing.print_preview_sticky_settings";
 
 // The list of BackgroundContents that should be loaded when the browser
 // launches.
 const char kRegisteredBackgroundContents[] = "background_contents.registered";
 
 #if defined(OS_WIN)
 // The "major.minor" OS version for which the welcome page was last shown.
@@ skipping 586 matching lines @@
 const char kMediaRouterEnableCloudServices[] =
     "media_router.cloudservices.enabled";
 #endif  // defined(GOOGLE_CHROME_BUILD)
 // Whether or not the Media Router first run flow has been acknowledged by the
 // user.
 const char kMediaRouterFirstRunFlowAcknowledged[] =
     "media_router.firstrunflow.acknowledged";
 #endif
 
 }  // namespace prefs