[omnibox] Add localEntities config to fieldtrial_testing_config.json

Change-Id: I92a9d623740fefb12e98922ffb072158a664d571
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2118759
Commit-Queue: manuk hovanesian <manukh@chromium.org>
Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#753242}

testing/variations/fieldtrial_testing_config.json

@@ -3648,7 +3648,6 @@
                         "NtpRealboxMatchOmniboxTheme",
                         "OmniboxDisplayTitleForCurrentUrl",
                         "OmniboxDocumentProvider",
-                        "OmniboxLocalEntitySuggestions",
                         "OmniboxMaxURLMatches",
                         "OmniboxOnFocusSuggestions",
                         "OmniboxRemoveSuggestionsFromClipboard",
@@ -3692,6 +3691,25 @@
             ]
         }
     ],
+    "OmniboxLocalEntities": [
+        {
+            "platforms": [
+                "chromeos",
+                "linux",
+                "mac",
+                "windows",
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "DesktopAndAndroidExperiments",
+                    "enable_features": [
+                        "OmniboxLocalEntitySuggestions"
+                    ]
+                }
+            ]
+        }
+    ],
     "OmniboxOnDeviceHeadSuggest": [
         {
             "platforms": [