Bug 1534395 - Rename nsITabParent to nsIRemoteTab. r=nika,mconley

nsITabParent is exposed to frontend code and is generally used as a representation of a remote tab. We could just rename the interface to nsIBrowserParent and worry about it later, but I think it's better to rename the interface to nsIRemoteTab so that we can later work on splitting the interface away from the PBrowser protocol.

Note: Some frontend code refers to a TabParentId. This commit renames this to RemoteTabId. We need to figure out the purpose of TabId with fission.

Differential Revision: https://phabricator.services.mozilla.com/D28132

dom/html/nsGenericHTMLFrameElement.cpp

@@ -133,7 +133,7 @@ void nsGenericHTMLFrameElement::EnsureFrameLoader() {
 }
 
 nsresult nsGenericHTMLFrameElement::CreateRemoteFrameLoader(
-    nsITabParent* aTabParent) {
+    nsIRemoteTab* aTabParent) {
   MOZ_ASSERT(!mFrameLoader);
   EnsureFrameLoader();
   NS_ENSURE_STATE(mFrameLoader);