Extends ContentCapture metrics

Bug: 1160723
Change-Id: I5c12e4a0034f52aff475959832b0857ecbaf1525
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2625530Reviewed-by: Weilun Shi <sweilun@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Michael Bai <michaelbai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843137}

tools/metrics/histograms/histograms_xml/content/histograms.xml

@@ -22,7 +22,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 <histograms>
 
 <histogram name="ContentCapture.CaptureContentDelayTime" units="ms"
-    expires_after="2021-02-01">
+    expires_after="2022-01-12">
   <owner>michaelbai@chromium.org</owner>
   <owner>src/third_party/blink/renderer/core/content_capture/OWNERS</owner>
   <summary>
@@ -53,7 +53,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="ContentCapture.CaptureContentTime2" units="microseconds"
-    expires_after="2021-06-20">
+    expires_after="2022-01-12">
   <owner>michaelbai@chromium.org</owner>
   <owner>src/third_party/blink/renderer/core/content_capture/OWNERS</owner>
   <summary>
@@ -65,7 +65,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="ContentCapture.GetBoundingBox" units="microseconds"
-    expires_after="2021-04-04">
+    expires_after="2022-01-12">
   <owner>michaelbai@chromium.org</owner>
   <owner>src/third_party/blink/renderer/core/content_capture/OWNERS</owner>
   <summary>
@@ -77,7 +77,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="ContentCapture.SendContentTime" units="microseconds"
-    expires_after="2021-06-06">
+    expires_after="2022-01-12">
   <owner>michaelbai@chromium.org</owner>
   <owner>src/third_party/blink/renderer/core/content_capture/OWNERS</owner>
   <summary>
@@ -100,14 +100,14 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="ContentCapture.SentContentCount2" units="count"
-    expires_after="2021-06-20">
+    expires_after="2022-01-12">
   <owner>michaelbai@chromium.org</owner>
   <owner>src/third_party/blink/renderer/core/content_capture/OWNERS</owner>
   <summary>The total number of content captures sent for a document.</summary>
 </histogram>
 
 <histogram name="ContentCapture.TaskDelayTimeInMs" units="ms"
-    expires_after="2021-06-06">
+    expires_after="2022-01-12">
   <owner>michaelbai@chromium.org</owner>
   <owner>src/third_party/blink/renderer/core/content_capture/OWNERS</owner>
   <summary>
@@ -119,7 +119,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="ContentCapture.TaskRunsPerCapture" units="runs"
-    expires_after="2021-06-13">
+    expires_after="2022-01-12">
   <owner>michaelbai@chromium.org</owner>
   <owner>src/third_party/blink/renderer/core/content_capture/OWNERS</owner>
   <summary>