Devtools UI: Tooltip needs to consider tooltip height in placing tooltip

Source/devtools/front_end/ui/Tooltip.js

 // Copyright (c) 2015 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.
 
 /**
  * @constructor
  * @param {!Document} doc
  */
 WebInspector.Tooltip = function(doc)
 {
@@ skipping 83 matching lines @@
         var anchorBox = this._anchorElement.boxInWindow(this.element.window());
         const anchorOffset = 2;
         const pageMargin = 2;
         this._tooltipElement.style.maxWidth = (containerOffsetWidth - pageMargin * 2) + "px";
         var tooltipWidth = this._tooltipElement.offsetWidth;
         var tooltipHeight = this._tooltipElement.offsetHeight;
         var tooltipX = anchorBox.x;
         tooltipX = Number.constrain(tooltipX,
             containerOffset.x + pageMargin,
             containerOffset.x + containerOffsetWidth - tooltipWidth - pageMargin);
-        var onBottom = anchorBox.y + anchorOffset + anchorBox.height < containerOffset.y + containerOffsetHeight;
+        var onBottom = anchorBox.y + anchorOffset + anchorBox.height + tooltipHeight < containerOffset.y + containerOffsetHeight;
         var tooltipY = onBottom ? anchorBox.y + anchorBox.height + anchorOffset : anchorBox.y - tooltipHeight - anchorOffset;
         this._tooltipElement.positionAt(tooltipX, tooltipY);
     },
 
     _hide: function()
     {
         delete this._anchorElement;
         this._tooltipElement.classList.remove("shown");
         if (Date.now() > this._tooltipLastOpened)
             this._tooltipLastClosed = Date.now();
@@ skipping 37 matching lines @@
 
     /**
      * @param {!Element|string} x
      * @this {!Element}
      */
     set: function(x)
     {
         WebInspector.Tooltip.install(this, x);
     }
 });