Correct iOS build for latest Xcode beta.

ios/chrome/browser/infobars/infobar_controller.mm

Index: ios/chrome/browser/infobars/infobar_controller.mm
diff --git a/ios/chrome/browser/infobars/infobar_controller.mm b/ios/chrome/browser/infobars/infobar_controller.mm
index 594f0f325ad8da0bf8c6a6afb9420e17b44f7118..810443ad02432ff1a6230e88e47f3e5a7246bdb1 100644
--- a/ios/chrome/browser/infobars/infobar_controller.mm
+++ b/ios/chrome/browser/infobars/infobar_controller.mm
@@ -16,6 +16,11 @@
 @implementation InfoBarController
 @synthesize delegate = _delegate;
 
+- (instancetype)init {

[sdefresne, 2015/06/10 16:57:28]

nit: I don't really mind, but we were asked to try to keep implementation and
declaration in the same order, so maybe move below the other initializer (here
and everywhere else too).

[justincohen, 2015/06/10 17:06:48]

Done.

+  NOTREACHED();
+  return nil;
+}
+
 - (instancetype)initWithDelegate:(InfoBarViewDelegate*)delegate {
   self = [super init];
   if (self) {