Bug 1470128 - Instrument inspector shadowdom support;r=pbro

MozReview-Commit-ID: JCknoaPiSlR

--HG--
extra : rebase_source : 2cc46308ab464b27da256ba9dd3473bd037ed1e6

devtools/client/inspector/markup/views/markup-container.js

@@ -74,6 +74,10 @@ MarkupContainer.prototype = {
 
     // Marking the node as shown or hidden
     this.updateIsDisplayed();
+
+    if (node.isShadowRoot) {
+      this.markup.telemetry.scalarSet("devtools.shadowdom.shadow_root_displayed", true);
+    }
   },
 
   buildMarkup: function() {
@@ -332,6 +336,10 @@ MarkupContainer.prototype = {
     if (this.showExpander) {
       this.tagLine.setAttribute("aria-expanded", this.expanded);
     }
+
+    if (this.node.isShadowRoot) {
+      this.markup.telemetry.scalarSet("devtools.shadowdom.shadow_root_expanded", true);
+    }
   },
 
   /**

devtools/client/inspector/markup/views/slotted-node-container.js

@@ -39,9 +39,9 @@ SlottedNodeContainer.prototype = extend(MarkupContainer.prototype, {
       return;
     }
 
-    this.markup.inspector.selection.setNodeFront(this.node, {
-      reason: "reveal-from-slot"
-    });
+    const reason = "reveal-from-slot";
+    this.markup.inspector.selection.setNodeFront(this.node, { reason });
+    this.markup.telemetry.scalarSet("devtools.shadowdom.reveal_link_clicked", true);
   },
 
   isDraggable: function() {

toolkit/components/telemetry/Scalars.yaml

@@ -948,6 +948,50 @@ devtools.inspector:
     record_in_processes:
       - 'main'
 
+devtools.shadowdom:
+  shadow_root_displayed:
+    bug_numbers:
+      - 1470128
+    description: >
+      Whether the markup view displayed any #shadow-root element in the UI.
+    expires: "66"
+    kind: boolean
+    notification_emails:
+      - dev-developer-tools@lists.mozilla.org
+      - jdescottes@mozilla.com
+    release_channel_collection: opt-out
+    record_in_processes:
+      - 'main'
+
+  shadow_root_expanded:
+    bug_numbers:
+      - 1470128
+    description: >
+      Whether the user expanded any #shadow-root element.
+    expires: "66"
+    kind: boolean
+    notification_emails:
+      - dev-developer-tools@lists.mozilla.org
+      - jdescottes@mozilla.com
+    release_channel_collection: opt-out
+    record_in_processes:
+      - 'main'
+
+  reveal_link_clicked:
+    bug_numbers:
+      - 1470128
+    description: >
+      Whether the user clicked on any "reveal" link. "reveal" links are displayed in
+      shadow dom trees in the markup view.
+    expires: "66"
+    kind: boolean
+    notification_emails:
+      - dev-developer-tools@lists.mozilla.org
+      - jdescottes@mozilla.com
+    release_channel_collection: opt-out
+    record_in_processes:
+      - 'main'
+
 devtools:
   current_theme:
     bug_numbers: