Bug 1577289 - reorder imports in viewSource.xul to properly initialize SAVEMODE_FILEONLY in contentAreaUtils.js and save the message source using system principal. r=jorgk

common/src/viewSource.js

@@ -762,7 +762,8 @@ function ViewSourceSavePage() {
   internalSave(gBrowser.currentURI.spec.replace(/^view-source:/i, ""),
                null, null, null, null, null, "SaveLinkTitle",
                null, null, gBrowser.contentDocument, null,
-               gPageLoader);
+               gPageLoader, null,
+               Services.scriptSecurityManager.getSystemPrincipal());
 }
 
 // Below are old deprecated functions and variables left behind for

common/src/viewSource.xul

@@ -40,12 +40,12 @@
 
   <script src="chrome://global/content/globalOverlay.js"/>
   <script src="chrome://global/content/printUtils.js"/>
+  <script src="chrome://global/content/contentAreaUtils.js"/>
 #ifndef MOZ_SUITE
-<script src="chrome://messenger/content/mailCore.js"/>
+  <script src="chrome://messenger/content/mailCore.js"/>
 #endif
   <script src="chrome://messenger/content/viewSource.js"/>
   <script src="chrome://messenger/content/viewZoomOverlay.js"/>
-  <script src="chrome://global/content/contentAreaUtils.js"/>
   <script src="chrome://global/content/editMenuOverlay.js"/>
 
   <stringbundle id="viewSourceBundle" src="chrome://messenger/locale/viewSource.properties"/>