Emit 'finish-launching' event when the application has finished launching.

browser/atom_application_delegate_mac.mm

@@ -4,21 +4,27 @@
 
 #import "browser/atom_application_delegate_mac.h"
 
+#include "base/strings/sys_string_conversions.h"
 #import "browser/atom_application_mac.h"
+#include "browser/browser.h"
 
 @implementation AtomApplicationDelegate
 
 - (void)applicationDidFinishLaunching:(NSNotification*)notify {
+  // Trap the quit message to handleQuitEvent.
   NSAppleEventManager* em = [NSAppleEventManager sharedAppleEventManager];
   [em setEventHandler:self
           andSelector:@selector(handleQuitEvent:withReplyEvent:)
         forEventClass:kCoreEventClass
            andEventID:kAEQuitApplication];
+
+  atom::Browser::Get()->DidFinishLaunching();
 }
 
 - (BOOL)application:(NSApplication*)sender
            openFile:(NSString*)filename {
-  return [[AtomApplication sharedApplication] openFile:filename];
+  std::string filename_str(base::SysNSStringToUTF8(filename));
+  return atom::Browser::Get()->OpenFile(filename_str) ? YES : NO;
 }
 
 - (void)handleQuitEvent:(NSAppleEventDescriptor*)event