Add immediate variants of doc.write page load metrics

chrome/browser/page_load_metrics/observers/document_write_page_load_metrics_observer.h

Index: chrome/browser/page_load_metrics/observers/document_write_page_load_metrics_observer.h
diff --git a/chrome/browser/page_load_metrics/observers/document_write_page_load_metrics_observer.h b/chrome/browser/page_load_metrics/observers/document_write_page_load_metrics_observer.h
index e39f9990530be40c1235c15212f4f20868e4ceba..070cf4ee84bcf2286cc8601d978ce09653243834 100644
--- a/chrome/browser/page_load_metrics/observers/document_write_page_load_metrics_observer.h
+++ b/chrome/browser/page_load_metrics/observers/document_write_page_load_metrics_observer.h
@@ -14,6 +14,9 @@ namespace internal {
 extern const char kHistogramDocWriteParseStartToFirstContentfulPaint[];
 extern const char kHistogramDocWriteBlockParseStartToFirstContentfulPaint[];
 extern const char kHistogramDocWriteBlockReloadCount[];
+extern const char kHistogramDocWriteParseStartToFirstContentfulPaintImmediate[];
+extern const char
+    kHistogramDocWriteBlockParseStartToFirstContentfulPaintImmediate[];
 
 }  // namespace internal
 
@@ -26,6 +29,17 @@ class DocumentWritePageLoadMetricsObserver
       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,
@@ -35,6 +49,24 @@ class DocumentWritePageLoadMetricsObserver
       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);
 };