Correct iOS build for latest Xcode beta.

ios/web/web_state/ui/crw_web_controller_container_view.mm

Index: ios/web/web_state/ui/crw_web_controller_container_view.mm
diff --git a/ios/web/web_state/ui/crw_web_controller_container_view.mm b/ios/web/web_state/ui/crw_web_controller_container_view.mm
index ffa55714135b4663110bc82e68f0de2ec510ba8b..e54e30339da53627bae8d19c1461800590add69f 100644
--- a/ios/web/web_state/ui/crw_web_controller_container_view.mm
+++ b/ios/web/web_state/ui/crw_web_controller_container_view.mm
@@ -97,11 +97,6 @@
 
 @implementation CRWWebControllerContainerView
 
-- (instancetype)init {
-  NOTREACHED();
-  return nil;
-}
-
 - (instancetype)initWithFrame:(CGRect)frame {
   self = [super initWithFrame:frame];
   if (self) {
@@ -112,6 +107,11 @@
   return self;
 }
 
+- (instancetype)init {
+  NOTREACHED();
+  return nil;
+}
+
 #pragma mark Accessors
 
 - (void)setToolbarContainerView:(CRWToolbarContainerView*)toolbarContainerView {