DevTools: Add aria-label to memory tool profile view combobox

https://imgur.com/a/gDmzwqL

Bug: 963183
Change-Id: Ibce22aaad2d609d4672700658603dff24ec30da3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1808796Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Anubha Mathur <anubmat@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#698978}

third_party/blink/renderer/devtools/front_end/profiler/ProfileView.js

@@ -34,6 +34,7 @@ Profiler.ProfileView = class extends UI.SimpleView {
     this.dataGrid.addEventListener(DataGrid.DataGrid.Events.DeselectedNode, this._nodeSelected.bind(this, false));
 
     this.viewSelectComboBox = new UI.ToolbarComboBox(this._changeView.bind(this));
+    this.viewSelectComboBox.setTitle(ls`Profile view mode`);
 
     this.focusButton = new UI.ToolbarButton(Common.UIString('Focus selected function'), 'largeicon-visibility');
     this.focusButton.setEnabled(false);

third_party/blink/renderer/devtools/front_end/profiler/profiler_strings.grdp

@@ -181,6 +181,9 @@
   <message name="IDS_DEVTOOLS_6db0d0f1832acb4a56fc82f2317e61e6" desc="Text in Profile View of a profiler tool">
     Parsing…
   </message>
+  <message name="IDS_DEVTOOLS_6de06ad67fbc56af1a7a5b16a41d2f2c" desc="Aria-label for profiles view combobox in memory tool">
+    Profile view mode
+  </message>
   <message name="IDS_DEVTOOLS_6e9dd9cf5419fd65f433f1e4bbc5e6ad" desc="Text in Heap Profile View of a profiler tool">
     SAMPLING PROFILES
   </message>