Page popups should respect zoom factor of the anchor element.

third_party/WebKit/Source/web/resources/listPicker.js

 "use strict";
 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var global = {
     argumentsReceived: false,
     params: null,
     picker: null
 };
@@ skipping 205 matching lines @@
     var desiredWindowHeight = noScrollHeight;
     var desiredWindowWidth = this._selectElement.offsetWidth;
     var expectingScrollbar = false;
     if (desiredWindowHeight > maxHeight) {
         desiredWindowHeight = maxHeight;
         // Setting overflow to auto does not increase width for the scrollbar
         // so we need to do it manually.
         desiredWindowWidth += getScrollbarWidth();
         expectingScrollbar = true;
     }
-    desiredWindowWidth = Math.max(this._config.anchorRectInScreen.width, desiredWindowWidth);
-    var windowRect = adjustWindowRect(desiredWindowWidth, desiredWindowHeight, this._selectElement.offsetWidth, 0);
+    var zoom = this._config.zoomFactor;
+    desiredWindowWidth = Math.max(this._config.anchorRectInScreen.width / zoom, desiredWindowWidth);
+    var windowRect = adjustWindowRect(desiredWindowWidth * zoom, desiredWindowHeight * zoom, this._selectElement.offsetWidth * zoom, 0);
     // If the available screen space is smaller than maxHeight, we will get an unexpected scrollbar.
-    if (!expectingScrollbar && windowRect.height < noScrollHeight) {
-        desiredWindowWidth = windowRect.width + getScrollbarWidth();
+    if (!expectingScrollbar && windowRect.height < noScrollHeight * zoom) {
+        desiredWindowWidth = windowRect.width + getScrollbarWidth() * zoom;
         windowRect = adjustWindowRect(desiredWindowWidth, windowRect.height, windowRect.width, windowRect.height);
     }
-    this._selectElement.style.width = windowRect.width + "px";
-    this._selectElement.style.height = windowRect.height + "px";
-    this._element.style.height = windowRect.height + "px";
+    this._selectElement.style.width = (windowRect.width / zoom) + "px";
+    this._selectElement.style.height = (windowRect.height / zoom) + "px";
+    this._element.style.height = (windowRect.height / zoom) + "px";
     setWindowRect(windowRect);
 };
 
 ListPicker.prototype._calculateScrollHeight = function() {
     // Element.scrollHeight returns an integer value but this calculate the
     // actual fractional value.
     var top = Infinity;
     var bottom = -Infinity;
     for (var i = 0; i < this._selectElement.children.length; i++) {
         var rect = this._selectElement.children[i].getBoundingClientRect();
@@ skipping 190 matching lines @@
     }
     this._applyItemStyle(element, config.style);
 };
 
 if (window.dialogArguments) {
     initialize(dialogArguments);
 } else {
     window.addEventListener("message", handleMessage, false);
     window.setTimeout(handleArgumentsTimeout, 1000);
 }