Move MediaDeviceIDSalt from ProfileIOData to ProfileImpl.

extensions/browser/api/webcam_private/webcam_private_api_chromeos.cc

Index: extensions/browser/api/webcam_private/webcam_private_api_chromeos.cc
diff --git a/extensions/browser/api/webcam_private/webcam_private_api_chromeos.cc b/extensions/browser/api/webcam_private/webcam_private_api_chromeos.cc
index 7e768073e2f9e9f96cd4c9b6595f0a1f30e33b6b..05457ce265d6fc3d14bb7d33cf312b2abfefa4cd 100644
--- a/extensions/browser/api/webcam_private/webcam_private_api_chromeos.cc
+++ b/extensions/browser/api/webcam_private/webcam_private_api_chromeos.cc
@@ -120,9 +120,7 @@ bool WebcamPrivateAPI::GetDeviceId(const std::string& extension_id,
 
   return content::GetMediaDeviceIDForHMAC(
       content::MEDIA_DEVICE_VIDEO_CAPTURE,
-      browser_context_->GetResourceContext()->GetMediaDeviceIDSalt(),
-      security_origin,
-      webcam_id,
+      browser_context_->GetMediaDeviceIDSalt(), security_origin, webcam_id,
       device_id);
 }
 
@@ -132,8 +130,7 @@ std::string WebcamPrivateAPI::GetWebcamId(const std::string& extension_id,
       extensions::Extension::GetBaseURLFromExtensionId(extension_id));
 
   return content::GetHMACForMediaDeviceID(
-      browser_context_->GetResourceContext()->GetMediaDeviceIDSalt(),
-      security_origin, device_id);
+      browser_context_->GetMediaDeviceIDSalt(), security_origin, device_id);
 }
 
 WebcamResource* WebcamPrivateAPI::FindWebcamResource(