Implements RLZ lib for iOS

rlz/rlz.gyp

Index: rlz/rlz.gyp
diff --git a/rlz/rlz.gyp b/rlz/rlz.gyp
index c38c4ff04b60289fa92bb67d0985ef0680da2f4e..18637058ed90d7563ab793f4505bd378fa25fc0e 100644
--- a/rlz/rlz.gyp
+++ b/rlz/rlz.gyp
@@ -34,6 +34,7 @@
         'chromeos/lib/machine_id_chromeos.cc',
         'chromeos/lib/rlz_value_store_chromeos.cc',
         'chromeos/lib/rlz_value_store_chromeos.h',
+        'ios/lib/machine_id_ios.cc',
         'lib/assert.cc',
         'lib/assert.h',
         'lib/crc32.h',
@@ -97,6 +98,15 @@
           },
         }],
       ],
+      'target_conditions': [
+        # Need 'target_conditions' to override default filename_rules to include
+        # the files on iOS.
+        ['OS=="ios"', {
+          'sources/': [
+            ['include', '^mac/lib/rlz_value_store_mac\\.'],
+          ],
+        }],
+      ],
       # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
       'msvs_disabled_warnings': [ 4267, ],
     },