Implements RLZTrackerDelegate on iOS.

ios/chrome/ios_chrome.gyp

Index: ios/chrome/ios_chrome.gyp
diff --git a/ios/chrome/ios_chrome.gyp b/ios/chrome/ios_chrome.gyp
index 13cf04797c956ecc861c6d36a732f40f3b6fb12f..bcd1ef25a38cb00b08c6223691e7c6dce926ff86 100644
--- a/ios/chrome/ios_chrome.gyp
+++ b/ios/chrome/ios_chrome.gyp
@@ -380,6 +380,7 @@
         ['enable_rlz==1', {
           'dependencies': [
             '../../components/components.gyp:rlz',
+            'ios_chrome_browser_rlz',
           ],
         }],
       ],
@@ -422,4 +423,25 @@
       },
     },
   ],
+  'conditions': [
+    ['enable_rlz_support==1', {
+      'targets': [
+        {
+          'target_name': 'ios_chrome_browser_rlz',
+          'type': 'static_library',
+          'sources': [
+            'browser/rlz/rlz_tracker_delegate_impl.cc',
+            'browser/rlz/rlz_tracker_delegate_impl.h',
+          ],
+          'dependencies': [
+            '../../components/components.gyp:google_core_browser',
+            '../../components/components.gyp:omnibox_browser',
+            '../../components/components.gyp:rlz',
+            '../../components/components.gyp:search_engines',
+            '../../rlz/rlz.gyp:rlz_lib',
+          ],
+        },
+      ],
+    }],
+  ],
 }