Add histograms for script execution time for doc write observer

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 1727ca2af1de172d509f753c4c577ae0f75a421b..90474551de42b29db6ef1f30566a554b881b7f0e 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -104305,6 +104305,9 @@ To add a new entry, add it with any value and run test to compute valid value.
 </histogram_suffixes>
 
 <histogram_suffixes name="PageLoadBackgrounded2" separator=".">
+  <suffix name="Background"
+      label="The page was backgrounded at least once from navigation start to
+             this event."/>
   <affected-histogram
       name="PageLoad.Clients.DocWrite.Block.ParseTiming.ParseBlockedOnScriptLoad"/>
   <affected-histogram
@@ -104323,7 +104326,6 @@ To add a new entry, add it with any value and run test to compute valid value.
       name="PageLoad.Clients.DocWrite.Block.Timing2.ParseDuration"/>
   <affected-histogram
       name="PageLoad.Clients.DocWrite.Evaluator.PaintTiming.NavigationToFirstContentfulPaint"/>
-  ;
   <affected-histogram
       name="PageLoad.Clients.DocWrite.Evaluator.ParseTiming.ParseBlockedOnScriptLoad"/>
   <affected-histogram
@@ -104351,9 +104353,6 @@ To add a new entry, add it with any value and run test to compute valid value.
   <affected-histogram name="PageLoad.DocumentTiming.NavigationToFirstLayout"/>
   <affected-histogram
       name="PageLoad.DocumentTiming.NavigationToLoadEventFired"/>
-  <suffix name="Background"
-      label="The page was backgrounded at least once from navigation start to
-             this event."/>
   <affected-histogram name="PageLoad.Events.Committed"/>
   <affected-histogram name="PageLoad.Events.Provisional"/>
   <affected-histogram
@@ -104454,42 +104453,6 @@ To add a new entry, add it with any value and run test to compute valid value.
 
 <histogram_suffixes name="PageLoadMetricsClients" separator="."
     ordering="prefix">
-  <affected-histogram
-      name="PageLoad.DocumentTiming.NavigationToDOMContentLoadedEventFired"/>
-  <affected-histogram name="PageLoad.DocumentTiming.NavigationToFirstLayout"/>
-  <affected-histogram
-      name="PageLoad.DocumentTiming.NavigationToLoadEventFired"/>
-  <affected-histogram
-      name="PageLoad.Experimental.PaintTiming.ParseStartToFirstMeaningfulPaint"/>
-  <affected-histogram
-      name="PageLoad.PaintTiming.NavigationToFirstContentfulPaint"/>
-  <affected-histogram name="PageLoad.PaintTiming.NavigationToFirstImagePaint"/>
-  <affected-histogram name="PageLoad.PaintTiming.NavigationToFirstPaint"/>
-  <affected-histogram name="PageLoad.PaintTiming.NavigationToFirstTextPaint"/>
-  <affected-histogram
-      name="PageLoad.PaintTiming.ParseStartToFirstContentfulPaint"/>
-  <affected-histogram name="PageLoad.ParseTiming.NavigationToParseStart"/>
-  <affected-histogram name="PageLoad.ParseTiming.ParseBlockedOnScriptLoad"/>
-  <affected-histogram
-      name="PageLoad.ParseTiming.ParseBlockedOnScriptLoadFromDocumentWrite"/>
-  <affected-histogram name="PageLoad.ParseTiming.ParseDuration"/>
-  <suffix name="Clients.FromGWS"
-      label="PageLoadMetrics that are a result of a navigation from a Google
-             web search">
-    <obsolete>
-      Deprecated in favor of Clients.FromGoogleSearch.
-    </obsolete>
-  </suffix>
-  <suffix name="Clients.FromGWS2"
-      label="PageLoadMetrics that are a result of a navigation from a Google
-             web search">
-    <obsolete>
-      Deprecated in favor of Clients.FromGoogleSearch.
-    </obsolete>
-  </suffix>
-  <suffix name="Clients.FromGoogleSearch"
-      label="PageLoadMetrics that are a result of a navigation from a Google
-             web search"/>
   <suffix name="Clients.CssScanner"
       label="Metrics from pages scanned by the preload scanner for @import
              CSS rules"/>
@@ -104500,9 +104463,16 @@ To add a new entry, add it with any value and run test to compute valid value.
       label="PageLoadMetrics that are a result of a navigation through the
              data reduction proxy with session in LoFi enabled or control
              field trial, and when the connection was slow."/>
+  <suffix name="Clients.DocWrite.Block"
+      label="PageLoadMetrics from a page that has synchronous, cross-origin
+             document.written scripts that could be blocked if the
+             document.write script blocking feature is enabled."/>
   <suffix name="Clients.DocWrite.Evaluator"
       label="PageLoadMetrics from a page that could have been evaluated by
              the DocumentWriteEvaluator"/>
+  <suffix name="Clients.FromGoogleSearch"
+      label="PageLoadMetrics that are a result of a navigation from a Google
+             web search"/>
   <suffix name="Clients.Previews.OfflinePages"
       label="PageLoadMetrics that are a result of a navigation that shows
              users an offline page preview. Offline page previews are shown
@@ -104510,13 +104480,46 @@ To add a new entry, add it with any value and run test to compute valid value.
   <suffix name="Clients.ServiceWorker"
       label="PageLoadMetrics from a page that is controlled by a Service
              Worker"/>
+  <suffix name="Clients.FromGWS"
+      label="PageLoadMetrics that are a result of a navigation from a Google
+             web search">
+    <obsolete>
+      Deprecated in favor of Clients.FromGoogleSearch.
+    </obsolete>
+  </suffix>
+  <suffix name="Clients.FromGWS2"
+      label="PageLoadMetrics that are a result of a navigation from a Google
+             web search">
+    <obsolete>
+      Deprecated in favor of Clients.FromGoogleSearch.
+    </obsolete>
+  </suffix>
+  <affected-histogram
+      name="PageLoad.DocumentTiming.NavigationToDOMContentLoadedEventFired"/>
+  <affected-histogram name="PageLoad.DocumentTiming.NavigationToFirstLayout"/>
+  <affected-histogram
+      name="PageLoad.DocumentTiming.NavigationToLoadEventFired"/>
+  <affected-histogram
+      name="PageLoad.Experimental.PaintTiming.ParseStartToFirstMeaningfulPaint"/>
+  <affected-histogram
+      name="PageLoad.PaintTiming.NavigationToFirstContentfulPaint"/>
+  <affected-histogram name="PageLoad.PaintTiming.NavigationToFirstImagePaint"/>
+  <affected-histogram name="PageLoad.PaintTiming.NavigationToFirstPaint"/>
+  <affected-histogram name="PageLoad.PaintTiming.NavigationToFirstTextPaint"/>
+  <affected-histogram
+      name="PageLoad.PaintTiming.ParseStartToFirstContentfulPaint"/>
+  <affected-histogram name="PageLoad.ParseTiming.NavigationToParseStart"/>
+  <affected-histogram
+      name="PageLoad.ParseTiming.ParseBlockedOnScriptExecution"/>
+  <affected-histogram
+      name="PageLoad.ParseTiming.ParseBlockedOnScriptExecutionFromDocumentWrite"/>
+  <affected-histogram name="PageLoad.ParseTiming.ParseBlockedOnScriptLoad"/>
+  <affected-histogram
+      name="PageLoad.ParseTiming.ParseBlockedOnScriptLoadFromDocumentWrite"/>
+  <affected-histogram name="PageLoad.ParseTiming.ParseDuration"/>
   <affected-histogram
       name="PageLoad.Timing2.DOMLoadingToDOMContentLoadedEventFired"/>
   <affected-histogram name="PageLoad.Timing2.DOMLoadingToFirstContentfulPaint"/>
-  <suffix name="Clients.DocWrite.Block"
-      label="PageLoadMetrics from a page that has synchronous, cross-origin
-             document.written scripts that could be blocked if the
-             document.write script blocking feature is enabled."/>
   <affected-histogram
       name="PageLoad.Timing2.NavigationToDOMContentLoadedEventFired"/>
   <affected-histogram name="PageLoad.Timing2.NavigationToFirstContentfulPaint"/>