Fix warning in Xcode about only building the active arch in Debug.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 61f11034675e8e6e0304be2dab8a3c9e9791a93e..3e0e7803de8ec0c05950837a2b2f0304808c1460 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -4644,6 +4644,15 @@
       ],
     }],
   ],
+  'configurations': {
+    'Debug': {
+      'xcode_settings': {
+        # Enable 'Build Active Architecture Only' for Debug. This
+        # avoids a project-level warning in Xcode.

[Mark Mentovai, 2013/09/03 13:52:22]

So this needs to be a project-level setting.

Right under 'configurations' above, you should approximately duplicate the same
warning from 'xcode_settings' immediately below, then.

[lliabraa, 2013/09/03 14:07:36]

Done.

+        'ONLY_ACTIVE_ARCH': 'YES',
+      },
+    },
+  },
   'xcode_settings': {
     # DON'T ADD ANYTHING NEW TO THIS BLOCK UNLESS YOU REALLY REALLY NEED IT!
     # This block adds *project-wide* configuration settings to each project