Move auxclick wpt test and add automation

third_party/WebKit/LayoutTests/external/wpt_automation/pointerevents/pointerevent_common_input.js

Index: third_party/WebKit/LayoutTests/external/wpt_automation/pointerevents/pointerevent_common_input.js
diff --git a/third_party/WebKit/LayoutTests/external/wpt_automation/pointerevents/pointerevent_common_input.js b/third_party/WebKit/LayoutTests/external/wpt_automation/pointerevents/pointerevent_common_input.js
index 113036f4e7f20d26a3d62df953cb4b67a273c37c..f925517b7bdb4735ca7c1a66914429bb6158e215 100644
--- a/third_party/WebKit/LayoutTests/external/wpt_automation/pointerevents/pointerevent_common_input.js
+++ b/third_party/WebKit/LayoutTests/external/wpt_automation/pointerevents/pointerevent_common_input.js
@@ -97,10 +97,13 @@ function mouseChordedButtonPress(targetSelector) {
   });
 }
 
-function mouseClickInTarget(targetSelector, targetFrame) {
+function mouseClickInTarget(targetSelector, targetFrame, button) {
   var targetDocument = document;
   var frameLeft = 0;
   var frameTop = 0;
+  if (button === undefined) {
+    button = 'left';
+  }
   if (targetFrame !== undefined) {
     targetDocument = targetFrame.contentDocument;
     var frameRect = targetFrame.getBoundingClientRect();
@@ -119,8 +122,8 @@ function mouseClickInTarget(targetSelector, targetFrame) {
             source: 'mouse',
             actions: [
               {name: 'pointerMove', x: xPosition, y: yPosition},
-              {name: 'pointerDown', x: xPosition, y: yPosition},
-              {name: 'pointerUp'}
+              {name: 'pointerDown', x: xPosition, y: yPosition, button: button},
+              {name: 'pointerUp', button: button}
             ]
           }],
           resolve);