Fix crash when using protocol module on startup.

The job factory was not created before any request was sent, so when the
app used the protocol module on startup it would cause a crash.

browser/atom_browser_main_parts.cc

@@ -75,6 +75,11 @@ void AtomBrowserMainParts::PreMainMessageLoopRun() {
 
   node_bindings_->RunMessageLoop();
 
+  // Make sure the url request job factory is created before the
+  // will-finish-launching event.
+  static_cast<content::BrowserContext*>(AtomBrowserContext::Get())->
+      GetRequestContext();
+
 #if !defined(OS_MACOSX)
   // The corresponding call in OS X is in AtomApplicationDelegate.
   Browser::Get()->WillFinishLaunching();

spec/main.js

@@ -35,6 +35,9 @@ app.on('window-all-closed', function() {
 });
 
 app.on('finish-launching', function() {
+  // Test if using protocol module would crash.
+  require('protocol').registerProtocol('test-if-crashes', function() {});
+
   window = new BrowserWindow({
     title: 'atom-shell tests',
     show: false,