(M44) Add UMA for ServiceWorkerURLRequestJob.

Trying to get a handle on "blank page" errors for
Service Worker controlled page loads.

BUG=498065

Review URL: https://codereview.chromium.org/1163423008

Cr-Commit-Position: refs/heads/master@{#334610}
(cherry picked from commit 43aef5c17c6ba019e889a23d49528a9a273d68a3)
TBR=nhiroki

Review URL: https://codereview.chromium.org/1178723011.

Cr-Commit-Position: refs/branch-heads/2403@{#346}
Cr-Branched-From: f54b8097a9c45ed4ad308133d49f05325d6c5070-refs/heads/master@{#330231}

1 files changed, 56 insertions, 0 deletions

diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index a3f1573..6d75f41 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -36123,6 +36123,24 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="ServiceWorker.FetchEvent.MainResource.Status"
+    enum="ServiceWorkerStatusCode">
+  <owner>falken@chromium.org</owner>
+  <summary>
+    The result of dispatching a fetch event to a Service Worker for a main
+    resource request.
+  </summary>
+</histogram>
+
+<histogram name="ServiceWorker.FetchEvent.Subresource.Status"
+    enum="ServiceWorkerStatusCode">
+  <owner>falken@chromium.org</owner>
+  <summary>
+    The result of dispatching a fetch event to a Service Worker for a
+    subresource request.
+  </summary>
+</histogram>
+
 <histogram name="ServiceWorker.FetchEventExecutionTime" units="millisecond">
   <owner>shimazu@chromium.org</owner>
   <summary>
@@ -36269,6 +36287,22 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="ServiceWorker.URLRequestJob.MainResource.Result"
+    enum="ServiceWorkerURLRequestJobResult">
+  <owner>falken@chromium.org</owner>
+  <summary>
+    Records the result of a main resource request forwarded to a Service Worker.
+  </summary>
+</histogram>
+
+<histogram name="ServiceWorker.URLRequestJob.Subresource.Result"
+    enum="ServiceWorkerURLRequestJobResult">
+  <owner>falken@chromium.org</owner>
+  <summary>
+    Records the result of a subresource request forwarded to a Service Worker.
+  </summary>
+</histogram>
+
 <histogram name="ServiceWorkerCache.Cache" units="milliseconds">
   <owner>dmurph@chromium.org</owner>
   <summary>
@@ -63090,6 +63124,28 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="17" label="SERVICE_WORKER_ERROR_REDUNDANT"/>
 </enum>
 
+<enum name="ServiceWorkerURLRequestJobResult" type="int">
+  <int value="0" label="REQUEST_JOB_FALLBACK_RESPONSE"/>
+  <int value="1" label="REQUEST_JOB_FALLBACK_FOR_CORS"/>
+  <int value="2" label="REQUEST_JOB_HEADERS_ONLY_RESPONSE"/>
+  <int value="3" label="REQUEST_JOB_STREAM_RESPONSE"/>
+  <int value="4" label="REQUEST_JOB_BLOB_RESPONSE"/>
+  <int value="5" label="REQUEST_JOB_ERROR_RESPONSE_STATUS_ZERO"/>
+  <int value="6" label="REQUEST_JOB_ERROR_BAD_BLOB"/>
+  <int value="7" label="REQUEST_JOB_ERROR_NO_PROVIDER_HOST"/>
+  <int value="8" label="REQUEST_JOB_ERROR_NO_ACTIVE_VERSION"/>
+  <int value="9" label="REQUEST_JOB_ERROR_NO_REQUEST"/>
+  <int value="10" label="REQUEST_JOB_ERROR_FETCH_EVENT_DISPATCH"/>
+  <int value="11" label="REQUEST_JOB_ERROR_BLOB_READ"/>
+  <int value="12" label="REQUEST_JOB_ERROR_STREAM_ABORTED"/>
+  <int value="13" label="REQUEST_JOB_ERROR_KILLED"/>
+  <int value="14" label="REQUEST_JOB_ERROR_KILLED_WITH_BLOB"/>
+  <int value="15" label="REQUEST_JOB_ERROR_KILLED_WITH_STREAM"/>
+  <int value="16" label="REQUEST_JOB_ERROR_DESTROYED"/>
+  <int value="17" label="REQUEST_JOB_ERROR_DESTROYED_WITH_BLOB"/>
+  <int value="18" label="REQUEST_JOB_ERROR_DESTROYED_WITH_STREAM"/>
+</enum>
+
 <enum name="ServiceWorkerWriteResponseResult" type="int">
   <int value="0" label="OK"/>
   <int value="1" label="Write headers error"/>