[DevTools] Replace usages of document with custom functions.

Source/devtools/front_end/components/ObjectPopoverHelper.js

Index: Source/devtools/front_end/components/ObjectPopoverHelper.js
diff --git a/Source/devtools/front_end/components/ObjectPopoverHelper.js b/Source/devtools/front_end/components/ObjectPopoverHelper.js
index c20454834c592708290e0a5ca59130941fea7034..031dc15e6d4efcfab7fc40dbf834180def35df70 100644
--- a/Source/devtools/front_end/components/ObjectPopoverHelper.js
+++ b/Source/devtools/front_end/components/ObjectPopoverHelper.js
@@ -75,7 +75,7 @@ WebInspector.ObjectPopoverHelper.prototype = {
             if (!response)
                 return;
 
-            var container = document.createElement("div");
+            var container = createElement("div");
             container.className = "inline-block";
 
             var title = container.createChild("div", "function-popover-title source-code");
@@ -114,7 +114,7 @@ WebInspector.ObjectPopoverHelper.prototype = {
             description = description.trimEnd(WebInspector.ObjectPopoverHelper.MaxPopoverTextLength);
             var popoverContentElement = null;
             if (result.type !== "object") {
-                popoverContentElement = document.createElement("span");
+                popoverContentElement = createElement("span");
                 popoverContentElement.className = "monospace console-formatted-" + result.type;
                 popoverContentElement.style.whiteSpace = "pre";
                 if (result.type === "string")
@@ -131,8 +131,8 @@ WebInspector.ObjectPopoverHelper.prototype = {
                     result.highlightAsDOMNode();
                     this._resultHighlightedAsDOM = result;
                 }
-                popoverContentElement = document.createElement("div");
-                this._titleElement = document.createElement("div");
+                popoverContentElement = createElement("div");
+                this._titleElement = createElement("div");
                 this._titleElement.className = "source-frame-popover-title monospace";
                 this._titleElement.textContent = description;
                 popoverContentElement.appendChild(this._titleElement);