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

components/media_device_id_salt/media_device_id_salt.cc

Index: components/media_device_id_salt/media_device_id_salt.cc
diff --git a/chrome/browser/media/media_device_id_salt.cc b/components/media_device_id_salt/media_device_id_salt.cc
similarity index 82%
rename from chrome/browser/media/media_device_id_salt.cc
rename to components/media_device_id_salt/media_device_id_salt.cc
index 2220418e031c0f21a713d886d5eacaaa2903f2f9..0c6e7ab9d14b43aa8fcf55ea297314ee484371c0 100644
--- a/chrome/browser/media/media_device_id_salt.cc
+++ b/components/media_device_id_salt/media_device_id_salt.cc
@@ -1,17 +1,23 @@
 // 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/media/media_device_id_salt.h"
+#include "components/media_device_id_salt/media_device_id_salt.h"
 
 #include "base/base64.h"
 #include "base/rand_util.h"
-#include "chrome/browser/profiles/profile_io_data.h"
-#include "chrome/common/pref_names.h"
 #include "components/prefs/pref_service.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
+namespace media_device_id_salt {
+
+namespace prefs {
+
+const char kMediaDeviceIdSalt[] = "media.device_id_salt";
+
+}  // namespace prefs
+
 namespace {
 
 std::string CreateSalt() {
@@ -40,8 +46,7 @@ MediaDeviceIDSalt::MediaDeviceIDSalt(PrefService* pref_service,
       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
 }
 
-MediaDeviceIDSalt::~MediaDeviceIDSalt() {
-}
+MediaDeviceIDSalt::~MediaDeviceIDSalt() {}
 
 void MediaDeviceIDSalt::ShutdownOnUIThread() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
@@ -62,6 +67,7 @@ void MediaDeviceIDSalt::RegisterProfilePrefs(
 }
 
 void MediaDeviceIDSalt::Reset(PrefService* pref_service) {
-  pref_service->SetString(prefs::kMediaDeviceIdSalt,
-                          CreateSalt());
+  pref_service->SetString(prefs::kMediaDeviceIdSalt, CreateSalt());
 }
+
+}  // namespace media_device_id_salt