Bug 1561079 - Add `referrerInfo` to <browser> r=ckerschb

Differential Revision: https://phabricator.services.mozilla.com/D36525

--HG--
extra : moz-landing-system : lando

dom/interfaces/base/nsIBrowser.idl

@@ -7,6 +7,7 @@ interface nsIContentSecurityPolicy;
 interface nsIPrincipal;
 interface nsIURI;
 interface nsIWebProgress;
+interface nsIReferrerInfo;
 
 webidl FrameLoader;
 
@@ -81,6 +82,7 @@ interface nsIBrowser : nsISupports
 
   readonly attribute nsIPrincipal contentPrincipal;
   readonly attribute nsIContentSecurityPolicy csp;
+  readonly attribute nsIReferrerInfo referrerInfo;
 
   /**
    * Whether or not the browser is in the process of an nsIWebNavigation
@@ -136,6 +138,7 @@ interface nsIBrowser : nsISupports
    * @param aContentStoragePrincipal the security principal for the new
    *                                 document's storage
    * @param aCSP the content security policy of the new document
+   * @param aReferrerInfo the referrer info of the new document
    * @param aIsSynthetic whether or not the document is synthetic
    * @param aInnerWindowID the inner window ID of the document
    * @param aHasRequestContextID whether or not the the request context has a
@@ -152,6 +155,7 @@ interface nsIBrowser : nsISupports
                                in nsIPrincipal aContentPrincipal,
                                in nsIPrincipal aContentStoragePrincipal,
                                in nsIContentSecurityPolicy aCSP,
+                               in nsIReferrerInfo aReferrerInfo,
                                in boolean aIsSynthetic,
                                in uint64_t aInnerWindowID,
                                in boolean aHasRequestContextID,

dom/ipc/BrowserChild.cpp

@@ -3617,6 +3617,7 @@ NS_IMETHODIMP BrowserChild::OnLocationChange(nsIWebProgress* aWebProgress,
       MOZ_TRY(CSPToCSPInfo(csp, &locationChangeData->csp().ref()));
     }
 
+    locationChangeData->referrerInfo() = document->ReferrerInfo();
     locationChangeData->isSyntheticDocument() = document->IsSyntheticDocument();
 
     if (nsCOMPtr<nsILoadGroup> loadGroup = document->GetDocumentLoadGroup()) {

dom/ipc/BrowserParent.cpp

@@ -2494,6 +2494,8 @@ mozilla::ipc::IPCResult BrowserParent::RecvOnLocationChange(
         PrincipalInfoToPrincipal(aLocationChangeData->contentPrincipal());
     nsCOMPtr<nsIPrincipal> contentStoragePrincipal = PrincipalInfoToPrincipal(
         aLocationChangeData->contentStoragePrincipal());
+    nsCOMPtr<nsIReferrerInfo> referrerInfo =
+        aLocationChangeData->referrerInfo();
 
     Unused << browser->SetIsNavigating(aLocationChangeData->isNavigating());
     Unused << browser->UpdateForLocationChange(
@@ -2501,7 +2503,7 @@ mozilla::ipc::IPCResult BrowserParent::RecvOnLocationChange(
         aLocationChangeData->mayEnableCharacterEncodingMenu(),
         aLocationChangeData->charsetAutodetected(),
         aLocationChangeData->documentURI(), aLocationChangeData->title(),
-        contentPrincipal, contentStoragePrincipal, csp,
+        contentPrincipal, contentStoragePrincipal, csp, referrerInfo,
         aLocationChangeData->isSyntheticDocument(),
         aWebProgressData->innerDOMWindowID(),
         aLocationChangeData->requestContextID().isSome(),

dom/ipc/PBrowser.ipdl

@@ -153,6 +153,7 @@ struct WebProgressLocationChangeData
   PrincipalInfo contentPrincipal;
   PrincipalInfo contentStoragePrincipal;
   CSPInfo? csp;
+  nsIReferrerInfo referrerInfo;
   uint64_t? requestContextID;
 };
 

toolkit/content/widgets/browser-custom-element.js

@@ -306,6 +306,8 @@
 
       this._csp = null;
 
+      this._referrerInfo = null;
+
       this._contentRequestContextID = null;
 
       this._fullZoom = 1;
@@ -803,6 +805,12 @@
       }
     }
 
+    get referrerInfo() {
+      return this.isRemoteBrowser
+        ? this._referrerInfo
+        : this.contentDocument.referrerInfo;
+    }
+
     get fullZoom() {
       if (this.isRemoteBrowser) {
         return this._fullZoom;
@@ -1560,6 +1568,7 @@
       aContentPrincipal,
       aContentStoragePrincipal,
       aCSP,
+      aReferrerInfo,
       aIsSynthetic,
       aInnerWindowID,
       aHaveRequestContextID,
@@ -1584,6 +1593,7 @@
         this._contentPrincipal = aContentPrincipal;
         this._contentStoragePrincipal = aContentStoragePrincipal;
         this._csp = aCSP;
+        this._referrerInfo = aReferrerInfo;
         this._isSyntheticDocument = aIsSynthetic;
         this._innerWindowID = aInnerWindowID;
         this._contentRequestContextID = aHaveRequestContextID