Bug 1041917 - Make it possible to transition from non-remote to remote browsers while browsing away from about: pages. r=billm. feedback=mrbkap.

--HG--
extra : histedit_source : f6bc00b11d21d68cc1a09c5da70d81a1c054085e

browser/base/content/tabbrowser.xml

@@ -776,6 +776,16 @@
                   unifiedComplete.registerOpenPage(aLocation);
                   this.mBrowser.registeredOpenURI = aLocation;
                 }
+
+                // It's possible we've moved from a URL that we cannot load remotely
+                // to one that we can. If so, switch to a remote browser. This will
+                // cause us to re-enter this onLocationChange function, but next time,
+                // updateBrowserRemotenessByURL will return false.
+                if (gMultiProcessBrowser &&
+                    this.mTabBrowser.updateBrowserRemotenessByURL(this.mBrowser,
+                                                                  aLocation.spec)) {
+                  this.mTabBrowser.loadURIWithFlags(aLocation.spec, aFlags);
+                }
               }
 
               if (!this.mBlank) {