predictors: Fix incorrect page load metrics histogram name.

chrome/browser/page_load_metrics/observers/resource_prefetch_predictor_page_load_metrics_observer.cc

Index: chrome/browser/page_load_metrics/observers/resource_prefetch_predictor_page_load_metrics_observer.cc
diff --git a/chrome/browser/page_load_metrics/observers/resource_prefetch_predictor_page_load_metrics_observer.cc b/chrome/browser/page_load_metrics/observers/resource_prefetch_predictor_page_load_metrics_observer.cc
index 0d383adeb10375f5966d33cf62b475f3e58c0d5a..34762b326a29f98b4a62d0e4f2f10681a9c60b01 100644
--- a/chrome/browser/page_load_metrics/observers/resource_prefetch_predictor_page_load_metrics_observer.cc
+++ b/chrome/browser/page_load_metrics/observers/resource_prefetch_predictor_page_load_metrics_observer.cc
@@ -13,10 +13,10 @@
 namespace internal {
 
 const char kHistogramResourcePrefetchPredictorFirstContentfulPaint[] =
-    "PageLoad.Clients.ResourcePrefetchPredictor.ParseTiming."
+    "PageLoad.Clients.ResourcePrefetchPredictor.PaintTiming."
     "NavigationToFirstContentfulPaint.Prefetchable";
 const char kHistogramResourcePrefetchPredictorFirstMeaningfulPaint[] =
-    "PageLoad.Clients.ResourcePrefetchPredictor.ParseTiming."
+    "PageLoad.Clients.ResourcePrefetchPredictor.PaintTiming."
     "NavigationToFirstMeaningfulPaint.Prefetchable";
 
 }  // namespace internal