[devtools] Support restore in InspectorAuditsAgent

Bug: chromium:1056284
Also-by: janscheffler@chromium.org
Change-Id: I65832e22730f98609be3213c8847fcaab47ced88
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2075378
Auto-Submit: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#744775}

third_party/blink/renderer/core/inspector/inspector_audits_agent.cc

@@ -137,9 +137,7 @@ Response InspectorAuditsAgent::enable() {
   }
 
   enabled_.Set(true);
-  instrumenting_agents_->AddInspectorAuditsAgent(this);
-  for (wtf_size_t i = 0; i < inspector_issue_storage_->size(); ++i)
-    InspectorIssueAdded(inspector_issue_storage_->at(i));
+  InnerEnable();
   return Response::OK();
 }
 
@@ -153,6 +151,18 @@ Response InspectorAuditsAgent::disable() {
   return Response::OK();
 }
 
+void InspectorAuditsAgent::Restore() {
+  if (!enabled_.Get())
+    return;
+  InnerEnable();
+}
+
+void InspectorAuditsAgent::InnerEnable() {
+  instrumenting_agents_->AddInspectorAuditsAgent(this);
+  for (wtf_size_t i = 0; i < inspector_issue_storage_->size(); ++i)
+    InspectorIssueAdded(inspector_issue_storage_->at(i));
+}
+
 void InspectorAuditsAgent::InspectorIssueAdded(InspectorIssue* issue) {
   std::unique_ptr<protocol::Audits::Issue> tmp =
       protocol::Audits::Issue::create()

third_party/blink/renderer/core/inspector/inspector_audits_agent.h

@@ -29,6 +29,8 @@ class CORE_EXPORT InspectorAuditsAgent final
   protocol::Response enable() override;
   protocol::Response disable() override;
 
+  void Restore() override;
+
   protocol::Response getEncodedResponse(
       const String& request_id,
       const String& encoding,
@@ -39,6 +41,7 @@ class CORE_EXPORT InspectorAuditsAgent final
       int* out_encoded_size) override;
 
  private:
+  void InnerEnable();
   Member<InspectorIssueStorage> inspector_issue_storage_;
   InspectorAgentState::Boolean enabled_;
   Member<InspectorNetworkAgent> network_agent_;