import changes from `dev' branch of rmottola/Arctic-Fox:

- Bug 1175485 part 1 - Allow inner iterator of ReverseIterator deref to any type, and change IntegerIterator, EnumeratedRange, and nsFrameList::Iterator to return value type instead of a reference. r=roc,waldo (83c53e8e8)
- Bug 1175485 part 2 - Add static_assert to MakeRange to ensure it is used with integers. r=waldo (2b6fc759a)
- Bug 1175485 part 3 - Remove unused operators, typedefs and IteratorTraits. r=waldo (91bc5407d)
- Bug 1175485 part 4 - Add unit test for integer range. r=waldo (ec2b7d4c1)
- Bug 1188204 - Fix more constructors in MFBT; r=froydnj (099428523)
- Bug 1187985 - Make PersistentRooted use rootKind to find its lists; r=sfink (0c223593a)
- Bug 1184191 - Assert in release mode if we reenter the garbage collector r=terrence (3207d3631)
- Bug 1188124 - Use rootKind to select the right PersistentRooted list head; r=sfink (47009c787)
- Bug 1174849 - Remove "serviceworker" from RequestContext; r=smaug,bkelly (138e480ea)
- Bug 1174868 - Avoid storing RequestContext inside InternalRequest; r=nsm,bkelly,smaug (779a05075)
- Bug 1147668 - Correctly reflect video and track RequestContext values; r=smaug (90f265d5f)
- Bug 1148818 - Re-enable the Cache part of test_request_context.html on Android now that it passes (782fe9777)
- Bug 1148935 - Correctly reflect worker and sharedworker RequestContext values; r=smaug (fd40e01d8)

dom/base/nsScriptLoader.cpp

@@ -234,7 +234,7 @@ nsScriptLoader::CheckContentPolicy(nsIDocument* aDocument,
                                    const nsAString &aType)
 {
   int16_t shouldLoad = nsIContentPolicy::ACCEPT;
-  nsresult rv = NS_CheckContentLoadPolicy(nsIContentPolicy::TYPE_SCRIPT,
+  nsresult rv = NS_CheckContentLoadPolicy(nsIContentPolicy::TYPE_INTERNAL_SCRIPT,
                                           aURI,
                                           aDocument->NodePrincipal(),
                                           aContext,
@@ -309,7 +309,7 @@ nsScriptLoader::StartLoad(nsScriptLoadRequest *aRequest, const nsAString &aType,
                      aRequest->mURI,
                      mDocument,
                      nsILoadInfo::SEC_NORMAL,
-                     nsIContentPolicy::TYPE_SCRIPT,
+                     nsIContentPolicy::TYPE_INTERNAL_SCRIPT,
                      loadGroup,
                      prompter,
                      nsIRequest::LOAD_NORMAL |