Enable OmniboxContextMenuShowFullUrls by default

Also delete testing config.

Launch bug: crbug.com/1064079

Change-Id: I023b20324674e4d160f850d488cf9c655838935d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2359579Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Reviewed-by: Brian White <bcwhite@chromium.org>
Commit-Queue: Livvie Lin <livvielin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799118}

components/omnibox/common/omnibox_features.cc

@@ -373,7 +373,7 @@ const base::Feature kOmniboxAssistantVoiceSearch{
 // When enabled, provides an omnibox context menu option that prevents URL
 // elisions.
 const base::Feature kOmniboxContextMenuShowFullUrls{
-    "OmniboxContextMenuShowFullUrls", base::FEATURE_DISABLED_BY_DEFAULT};
+    "OmniboxContextMenuShowFullUrls", base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Feature used to reveal the path, query and ref from steady state URLs
 // on hover.

testing/variations/fieldtrial_testing_config.json

@@ -4592,24 +4592,6 @@
             ]
         }
     ],
-    "OmniboxContextMenuShowFullUrls": [
-        {
-            "platforms": [
-                "chromeos",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "OmniboxContextMenuShowFullUrls"
-                    ]
-                }
-            ]
-        }
-    ],
     "OmniboxEnableClipboardProviderImageSuggestions": [
         {
             "platforms": [