Revert "Prepare blink to unify definitions of load completion"

LayoutTests/svg/custom/resources/linkingCircle-f.svg

 <?xml version="1.0" standalone="no"?>
 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Basic//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-basic.dtd">
 <!-- ===================================================================== -->
 <!-- linkingCircle-f.svg                                                     -->
 <!-- Auxiliary file for linking tests.                                     -->
 <!-- ====================================================================== -->
-<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="linkingCircle-f.svg" width="480" height="360" onload="setTimeout(report, 0);">
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="linkingCircle-f.svg" width="480" height="360" onload="report()">
 <script>
 function report() {
 if (window.testRunner)
     window.testRunner.notifyDone();
 }
 </script>
         <title id="test-title">linkingCircle-f.svg</title>
         <desc id="test-desc">Some circles with ids, for linking tests.</desc>
         <g id="test-body-content">
                 <text x="100" y="20" style="font-size:12">Some circles with ids, for linking tests.</text>
                 <circle id="circle-1" cx="220" cy="140" r="35" style="fill:red; stroke:black"/>
                 <text style="font-family:Helvetica;font-size:12" x="203" y="99">circle-1</text>
                 <circle id="circle-2" cx="100" cy="260" r="20" style="stroke:lime; fill:yellow; stroke-width:4"/>
                 <text style="font-family:Helvetica;font-size:12" x="80" y="295">circle-2</text>
                 <!-- Framing rect for circle-2 -->
                 <rect x="64" y="227" width="72" height="72" style="fill:none; stroke:black"/>
                 <circle id="circle-3" cx="340" cy="260" r="50" style="stroke:blue; fill:none; stroke-width:10"/>
                 <text style="font-family:Helvetica;font-size:12" x="320" y="332">circle-3</text>
         </g>
         <g id="test-legend">
                 <!-- Test-framing rectangle, drawn just inside viewport boundary. -->
                 <rect id="test-frame" x="1" y="1" width="478" height="358" style="fill:none; stroke:#000000"/>
         </g>
 </svg>