Mark auxclick as stable

BUG=625847

Review-Url: https://codereview.chromium.org/2302513002
Cr-Commit-Position: refs/heads/master@{#417053}

third_party/WebKit/LayoutTests/virtual/stable/fast/events/mouse-click-events-expected.txt

-This tests what mouse events we send.
-
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-Left Mouse Button
-PASS eventLog is "mousedown(0) mouseup(0) click(0) mousedown(0) mouseup(0) click(0) dblclick(0) "
-Middle Mouse Button
-PASS eventLog is "mousedown(1) mouseup(1) click(1) mousedown(1) mouseup(1) click(1) dblclick(1) "
-Right Mouse Button
-PASS eventLog is "mousedown(2) mouseup(2) mousedown(2) mouseup(2) "
-PASS successfullyParsed is true
-
-TEST COMPLETE
-

third_party/WebKit/LayoutTests/virtual/stable/webexposed/element-instance-property-listing-expected.txt

@@ -108,6 +108,7 @@ namespace http://www.w3.org/1999/xhtml
     property offsetTop
     property offsetWidth
     property onabort
+    property onauxclick
     property onbeforecopy
     property onbeforecut
     property onbeforepaste
@@ -1173,6 +1174,7 @@ namespace http://www.w3.org/2000/svg
     property offsetTop
     property offsetWidth
     property onabort
+    property onauxclick
     property onbeforecopy
     property onbeforecut
     property onbeforepaste

third_party/WebKit/LayoutTests/virtual/stable/webexposed/global-interface-listing-expected.txt

@@ -795,6 +795,7 @@ interface Document : Node
     getter lastModified
     getter links
     getter onabort
+    getter onauxclick
     getter onbeforecopy
     getter onbeforecut
     getter onbeforepaste
@@ -949,6 +950,7 @@ interface Document : Node
     setter dir
     setter domain
     setter onabort
+    setter onauxclick
     setter onbeforecopy
     setter onbeforecut
     setter onbeforepaste
@@ -1641,6 +1643,7 @@ interface HTMLElement : Element
     getter offsetTop
     getter offsetWidth
     getter onabort
+    getter onauxclick
     getter onblur
     getter oncancel
     getter oncanplay
@@ -1722,6 +1725,7 @@ interface HTMLElement : Element
     setter innerText
     setter lang
     setter onabort
+    setter onauxclick
     setter onblur
     setter oncancel
     setter oncanplay
@@ -4095,6 +4099,7 @@ interface SVGElement : Element
     getter className
     getter dataset
     getter onabort
+    getter onauxclick
     getter onblur
     getter oncancel
     getter oncanplay
@@ -4165,6 +4170,7 @@ interface SVGElement : Element
     method constructor
     method focus
     setter onabort
+    setter onauxclick
     setter onblur
     setter oncancel
     setter oncanplay
@@ -6565,6 +6571,7 @@ interface webkitURL
     attribute onanimationend
     attribute onanimationiteration
     attribute onanimationstart
+    attribute onauxclick
     attribute onbeforeunload
     attribute onblur
     attribute oncancel

third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in

@@ -32,7 +32,7 @@ AlwaysUseComplexText status=stable
 AudioOutputDevices status=stable
 AudioVideoTracks status=experimental
 AudioWorklet status=experimental
-Auxclick status=experimental
+Auxclick status=stable
 BackgroundSync status=stable
 BackspaceDefaultHandler status=test
 BroadcastChannel status=stable