[EmojiSuggest] Add fieldtrial testing config for map 1 and map 2

Added based on Finch's action in http://cl/329846664

Bug: b/166523259
Change-Id: I8f3bcba929cf5783b453722e572ddac9e132f26a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2391037
Commit-Queue: My Nguyen <myy@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#804445}

testing/variations/fieldtrial_testing_config.json

@@ -1169,6 +1169,24 @@
             ]
         }
     ],
+    "ChromeOSEmojiSuggestion": [
+        {
+            "platforms": [
+                "chromeos"
+            ],
+            "experiments": [
+                {
+                    "name": "UseMap1_20200903",
+                    "params": {
+                        "map": "1"
+                    },
+                    "enable_features": [
+                        "EmojiSuggestAddition"
+                    ]
+                }
+            ]
+        }
+    ],
     "ChromeOSHeuristicPalm": [
         {
             "platforms": [