Add immediate variants of doc.write page load metrics

chrome/browser/page_load_metrics/observers/document_write_page_load_metrics_observer.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_DOCUMENT_WRITE_PAGE_LOAD_METRICS_OBSERVER_H_
 #define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_DOCUMENT_WRITE_PAGE_LOAD_METRICS_OBSERVER_H_
 
 #include "base/macros.h"
 #include "components/page_load_metrics/browser/page_load_metrics_observer.h"
 
 namespace internal {
 
 // Expose metrics for tests.
 extern const char kHistogramDocWriteParseStartToFirstContentfulPaint[];
 extern const char kHistogramDocWriteBlockParseStartToFirstContentfulPaint[];
 extern const char kHistogramDocWriteBlockReloadCount[];
+extern const char kHistogramDocWriteParseStartToFirstContentfulPaintImmediate[];
+extern const char
+    kHistogramDocWriteBlockParseStartToFirstContentfulPaintImmediate[];
 
 }  // namespace internal
 
 class DocumentWritePageLoadMetricsObserver
     : public page_load_metrics::PageLoadMetricsObserver {
  public:
   DocumentWritePageLoadMetricsObserver();
   // page_load_metrics::PageLoadMetricsObserver implementation:
   void OnComplete(
       const page_load_metrics::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& extra_info) override;
 
+  void OnFirstContentfulPaint(
+      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::PageLoadExtraInfo& extra_info) override;
+
+  void OnParseStop(
+      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::PageLoadExtraInfo& extra_info) override;
+
+  void OnLoadingBehaviorObserved(
+      const page_load_metrics::PageLoadExtraInfo& extra_info) override;
+
  private:
   void LogDocumentWriteEvaluatorData(
       const page_load_metrics::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& info);
 
   void LogDocumentWriteBlockData(
       const page_load_metrics::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& info);
 
+  void LogDocumentWriteEvaluatorFirstContentfulPaint(
+      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::PageLoadExtraInfo& info);
+
+  void LogDocumentWriteEvaluatorParseStop(
+      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::PageLoadExtraInfo& info);
+
+  void LogDocumentWriteBlockFirstContentfulPaint(
+      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::PageLoadExtraInfo& info);
+
+  void LogDocumentWriteBlockParseStop(
+      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::PageLoadExtraInfo& info);
+
+  bool doc_write_block_reload_observed_;
+
   DISALLOW_COPY_AND_ASSIGN(DocumentWritePageLoadMetricsObserver);
 };
 
 #endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_DOCUMENT_WRITE_PAGE_LOAD_METRICS_OBSERVER_H_