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

BUG=524387

Review URL: https://codereview.chromium.org/1310863003

git-svn-id: svn://svn.chromium.org/blink/trunk@201257 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/devtools/front_end/ui/Tooltip.js

@@ -101,7 +101,7 @@ WebInspector.Tooltip.prototype = {
         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);
     },