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

chrome/browser/profiles/profile_io_data.h

Index: chrome/browser/profiles/profile_io_data.h
diff --git a/chrome/browser/profiles/profile_io_data.h b/chrome/browser/profiles/profile_io_data.h
index 46f218b580b8049e1029fa39f94498834264d910..1e8b5796b115a49415a48afb6757b7339a4c394c 100644
--- a/chrome/browser/profiles/profile_io_data.h
+++ b/chrome/browser/profiles/profile_io_data.h
@@ -41,7 +41,6 @@ class ChromeNetworkDelegate;
 class ChromeURLRequestContextGetter;
 class ChromeExpectCTReporter;
 class HostContentSettingsMap;
-class MediaDeviceIDSalt;
 class ProtocolHandlerRegistry;
 class SupervisedUserURLFilter;
 
@@ -66,6 +65,10 @@ class ExtensionThrottleManager;
 class InfoMap;
 }
 
+namespace media_device_id_salt {
+class MediaDeviceIDSalt;
+}
+
 namespace net {
 class CertificateReportSender;
 class CertVerifier;
@@ -514,7 +517,8 @@ class ProfileIOData {
 
   mutable StringPrefMember google_services_user_account_id_;
 
-  mutable scoped_refptr<MediaDeviceIDSalt> media_device_id_salt_;
+  mutable scoped_refptr<media_device_id_salt::MediaDeviceIDSalt>
+      media_device_id_salt_;
 
   // Member variables which are pointed to by the various context objects.
   mutable BooleanPrefMember enable_referrers_;