[DevTools] Fix Background Service metadata entry order.

According to https://developers.google.com/protocol-buffers/docs/proto#maps
iteration ordering of map values is undefined. This CL sorts the
metadata entries before in the DevTools frontend so
they can be presented in a consistent order.

Also remove redundant test formatting, fix the OWNERS Background Service
regexp to include the handler, and make the row counting start from 1.

Change-Id: I36024f23fbb307b1160cd67120dcf67ca8697aa1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1615251
Commit-Queue: Rayan Kanso <rayankans@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Richard Knoll <knollr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#664458}

content/browser/devtools/OWNERS

 caseq@chromium.org
 alph@chromium.org
 
-per-file *background_services*=rayankans@chromium.org
+per-file *background_service*=rayankans@chromium.org
 
 # COMPONENT: Platform>DevTools

third_party/blink/renderer/devtools/front_end/resources/BackgroundServiceView.js

@@ -234,7 +234,7 @@ Resources.BackgroundServiceView = class extends UI.VBox {
       swScope = registration.scopeURL.substr(registration.securityOrigin.length);
 
     return {
-      id: this._dataGrid.rootNode().children.length,
+      id: this._dataGrid.rootNode().children.length + 1,
       timestamp: UI.formatTimestamp(serviceEvent.timestamp * 1000, /* full= */ true),
       origin: serviceEvent.origin,
       swScope,
@@ -339,7 +339,7 @@ Resources.BackgroundServiceView.EventDataNode = class extends DataGrid.DataGridN
     super(data);
 
     /** @const {!Array<!Protocol.BackgroundService.EventMetadata>} */
-    this._eventMetadata = eventMetadata;
+    this._eventMetadata = eventMetadata.sort((m1, m2) => m1.key.compareTo(m2.key));
   }
 
   /**

third_party/blink/web_tests/http/tests/devtools/background-services/background-service-grid-expected.txt

@@ -3,16 +3,16 @@ Tests that the grid shows information as expected.
 Grid Entries:
     [empty]
 Grid Entries:
-    0, 1556889085000, Event1, http://127.0.0.1:8000/, [blank], Instance1, [blank]
+    1, 1556889085000, Event1, http://127.0.0.1:8000/, [blank], Instance1, [blank]
 Grid Entries:
-    0, 1556889085000, Event1, http://127.0.0.1:8000/, [blank], Instance1, [blank]
+    1, 1556889085000, Event1, http://127.0.0.1:8000/, [blank], Instance1, [blank]
 Grid Entries:
-    0, 1556889085000, Event1, http://127.0.0.1:8000/, [blank], Instance1, [blank]
+    1, 1556889085000, Event1, http://127.0.0.1:8000/, [blank], Instance1, [blank]
 Grid Entries:
-    0, 1556889085000, Event1, http://127.0.0.1:8000/, [blank], Instance1, [blank]
-    1, 1556889085000, Event2, http://127.0.0.1:8080/, [blank], Instance1, [blank]
+    1, 1556889085000, Event1, http://127.0.0.1:8000/, [blank], Instance1, [blank]
+    2, 1556889085000, Event2, http://127.0.0.1:8080/, [blank], Instance1, [blank]
 Grid Entries:
-    0, 1556889085000, Event1, http://127.0.0.1:8000/, [blank], Instance1, [blank]
+    1, 1556889085000, Event1, http://127.0.0.1:8000/, [blank], Instance1, [blank]
 Grid Entries:
     [empty]