Turn on ChromeCleanupProtobufIPC feature by default

R=proberge

Bug: 969139
Change-Id: Ibb65a3b6b70fe8dcc03623c281e8207206107571
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1900562
Commit-Queue: Joe Mason <joenotcharles@chromium.org>
Commit-Queue: Jesse Doherty <jwd@chromium.org>
Reviewed-by: proberge <proberge@chromium.org>
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Auto-Submit: Joe Mason <joenotcharles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713208}

chrome/browser/safe_browsing/chrome_cleaner/srt_field_trial_win.cc

@@ -43,7 +43,7 @@ const base::Feature kChromeCleanupExtensionsFeature{
     "ChromeCleanupExtensions", base::FEATURE_DISABLED_BY_DEFAULT};
 
 const base::Feature kChromeCleanupProtobufIPCFeature{
-    "ChromeCleanupProtobufIPC", base::FEATURE_DISABLED_BY_DEFAULT};
+    "ChromeCleanupProtobufIPC", base::FEATURE_ENABLED_BY_DEFAULT};
 
 bool IsSRTPromptFeatureEnabled() {
   return base::FeatureList::IsEnabled(kChromeCleanupInBrowserPromptFeature);

testing/variations/fieldtrial_testing_config.json

@@ -1517,21 +1517,6 @@
             ]
         }
     ],
-    "ChromeCleanupProtobufIPC": [
-        {
-            "platforms": [
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "ChromeCleanupProtobufIPC"
-                    ]
-                }
-            ]
-        }
-    ],
     "ChromeSmartSelection": [
         {
             "platforms": [