Revert 231456 "Remove ninja special cases for iOS build configur..."

Revert 231456 "Remove ninja special cases for iOS build configur..."

This broke the "iOS Device" bot.

> Remove ninja special cases for iOS build configurations.
> 
> Gyp now sets -iphoneos architecture, so armv7 switching isn't required in
> common.gypi.  This CL also gets rid of ONLY_ACTIVE_ARCH, which requires full
> rebuilds when switching devices between armv7, armv7s and arm64 devices.
> 
> Also remove the iOS5 arclite link step, which isn't needed in iOS6+.
>  
> BUG=312300
> Test=ios_rel_device builds
> 
> Review URL: https://codereview.chromium.org/25535004

TBR=justincohen@google.com

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=231466

[rmsousa, 2013-10-29 00:55:19]

Committed patchset #1 manually as r231466.