Start sending auxclick instead of click for non-primary buttons

third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js

Index: third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js b/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js
index ae8b2454f10a844c9f49801dcb2c227d86b6c8b5..754e09290c2fc17532d2284825ee022113a0a469 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js
@@ -1075,6 +1075,7 @@ WebInspector.TabbedPaneTab.prototype = {
             tabElement.classList.add("measuring");
         } else {
             tabElement.addEventListener("click", this._tabClicked.bind(this), false);
+            tabElement.addEventListener("auxclick", this._tabClicked.bind(this), false);

[dgozman, 2016/07/27 20:30:43]

Note that if you stop sending regular click events for non-primary buttons, this
code deployed in the wild will break.

[Navid Zolghadr, 2016/07/27 20:39:09]

I was under the impression that this code in the wild gets updated with this
version of the Chrome as they are internal Chrome pages. So the change of not
sending the click for non-primary buttons will deploy along with the change to
this file. Am I right? or is there something else that I'm missing?

[dgozman, 2016/07/27 20:49:27]

We have old version in the cloud, which are used regularly, so this will break
them.

Anyway, this seems like breaking web platform compat. Did you send an intent to
remove to blink-dev?

[dtapuska, 2016/07/28 23:41:11]

We can probably polyfill for auxclick. Although you do need to detect somehow
that the code you downloaded from the cloud now supports auxclick so don't
re-dispatch the auxclick as a click event. Not entirely sure how the devtools
follows a pattern for that. Likewise the auxclick is runtime enabled; so that
polyfill would have to be handled somehow like that.

             tabElement.addEventListener("mousedown", this._tabMouseDown.bind(this), false);
             tabElement.addEventListener("mouseup", this._tabMouseUp.bind(this), false);