[Cleanup] Move all browsertests to use ScopedFeatureList to modify features

chrome/common/chrome_features.h

Index: chrome/common/chrome_features.h
diff --git a/chrome/common/chrome_features.h b/chrome/common/chrome_features.h
index 51579cd62577e0891aa4256ab8c9ec7a82a2eaf1..2db1e18914d7b6487fb3a87ca8a9df87e1d72641 100644
--- a/chrome/common/chrome_features.h
+++ b/chrome/common/chrome_features.h
@@ -19,6 +19,8 @@ namespace features {
 // All features in alphabetical order. The features should be documented
 // alongside the definition of their values in the .cc file.
 
+extern const base::Feature kAdsFeature;
+
 #if defined(OS_ANDROID)
 extern const base::Feature kAllowAutoplayUnmutedInWebappManifestScope;
 #endif  // defined(OS_ANDROID)
@@ -141,6 +143,8 @@ extern const base::Feature kOneGoogleBarOnLocalNtp;
 
 extern const base::Feature kPermissionsBlacklist;
 
+extern const base::Feature kPreconnectMore;
+
 #if defined(OS_WIN)
 extern const base::Feature kDisablePostScriptPrinting;
 #endif