[mv3] Also log salvaged rules using entity-based domains

Some filters with entity-based domain option can be salvaged
when there are non-entity-based domain option, but since we are
throwing away the entity-based entries, we are only partially
converting to DNR. This commit will log a warning about this
in log.txt. Before this commit, only non-salvageable filters
were logged.

platform/mv3/make-rulesets.js

@@ -267,6 +267,12 @@ async function processNetworkFilters(assetDetails, network) {
 
     const plainGood = rules.filter(rule => isGood(rule) && isRegex(rule) === false);
     log(`\tPlain good: ${plainGood.length}`);
+    log(plainGood
+        .filter(rule => Array.isArray(rule._warning))
+        .map(rule => rule._warning.map(v => `\t\t${v}`))
+        .join('\n'),
+        true
+    );
 
     const regexes = rules.filter(rule => isGood(rule) && isRegex(rule));
     log(`\tMaybe good (regexes): ${regexes.length}`);

src/js/static-net-filtering.js

@@ -673,6 +673,11 @@ const dnrAddRuleError = (rule, msg) => {
     rule._error.push(msg);
 };
 
+const dnrAddRuleWarning = (rule, msg) => {
+    rule._warning = rule._warning || [];
+    rule._warning.push(msg);
+};
+
 /*******************************************************************************
 
     Filter classes
@@ -4385,8 +4390,9 @@ FilterContainer.prototype.dnrFromCompiled = function(op, context, ...args) {
                 hn => hn.endsWith('.*') === false
             );
             if ( domains.length === 0 ) {
-                dnrAddRuleError(rule, `Could not salvage rule with only entity-based domain= option: ${rule.condition.initiatorDomains.join('|')}`);
+                dnrAddRuleError(rule, `Can't salvage rule with only entity-based domain= option: ${rule.condition.initiatorDomains.join('|')}`);
             } else {
+                dnrAddRuleWarning(rule, `Salvaged rule by ignoring ${rule.condition.initiatorDomains.length - domains.length} entity-based domain= option: ${rule.condition.initiatorDomains.join('|')}`);
                 rule.condition.initiatorDomains = domains;
             }
         }