media: Invoke PlatformVerificationDialog from ProtectedMediaIdentifierPermissionContext.

chrome/browser/chromeos/attestation/platform_verification_flow.h

Index: chrome/browser/chromeos/attestation/platform_verification_flow.h
diff --git a/chrome/browser/chromeos/attestation/platform_verification_flow.h b/chrome/browser/chromeos/attestation/platform_verification_flow.h
index a48b11cfd79270813126dbee17d89a298ab54224..48b5de56af7777e220541b7902ebcbc9a45c5f97 100644
--- a/chrome/browser/chromeos/attestation/platform_verification_flow.h
+++ b/chrome/browser/chromeos/attestation/platform_verification_flow.h
@@ -92,9 +92,10 @@ class PlatformVerificationFlow
 
     // Invokes consent UI within the context of |web_contents| and calls
     // |callback| when the user responds.
-    // Precondition: The last committed URL for |web_contents| has a valid
-    //               origin.
+    // |requesting_origin| or the extension/app name will be shown on the prompt
+    // if the request comes from a web page or an extension/app, respectively.
     virtual void ShowConsentPrompt(content::WebContents* web_contents,
+                                   const GURL& requesting_origin,
                                    const ConsentCallback& callback) = 0;
 
     // Gets prefs associated with the given |web_contents|.  If no prefs are