Chrome 48 removes SVGGraphicsElement.getTransformToElement()

[thvitt]

Cf. dagrejs/dagre-d3#202

Essentially, this breaks our overlay code, leading to issues such as:

ERROR: failed rendering "out2/svg/diplomatic/archival/agad_warszawa/PL_1_354_13-16-24_20-21.xml" on page 1 from transcript "/home/tv/Faust/transcript/agad_warszawa/PL_1_354_13-16-24/0020.xml"
  Chrome errormessage: 
{
   "text" : "Uncaught TypeError: target.getTransformToElement is not a function",
   "line" : 308,
   "url" : "http://127.0.0.1/faust-gen/js/svg-utils.js",
   "column" : 22,
   "stackTrace" : [
      {
         "columnNumber" : 23,
         "url" : "http://127.0.0.1/faust-gen/js/svg-utils.js",
         "scriptId" : "43",
         "lineNumber" : 308,
         "functionName" : "fitTo"
      },
      {
         "url" : "http://127.0.0.1/faust-gen/js/transcript-generation.js",
         "columnNumber" : 20,
         "lineNumber" : 115,
         "functionName" : "",
         "scriptId" : "53"
      },
      {
         "columnNumber" : 89,
         "url" : "http://127.0.0.1/faust-gen/js/transcript-generation.js",
         "scriptId" : "53",
         "lineNumber" : 110,
         "functionName" : "transcriptGeneration.createFacsimileOverlaySvg.createFacsimileOverlaySvg"
      },
      {
         "url" : "",
         "columnNumber" : 15758,
         "scriptId" : "57",
         "functionName" : "",
         "lineNumber" : 1
      },
      {
         "lineNumber" : 1,
         "functionName" : "",
         "scriptId" : "57",
         "columnNumber" : 15878,
         "url" : ""
      },
      {
         "scriptId" : "54",
         "functionName" : "InjectedScript._evaluateOn",
         "lineNumber" : 875,
         "columnNumber" : 140,
         "url" : ""
      },
      {
         "url" : "",
         "columnNumber" : 34,
         "scriptId" : "54",
         "lineNumber" : 808,
         "functionName" : "InjectedScript._evaluateAndWrap"
      },
      {
         "columnNumber" : 21,
         "url" : "",
         "lineNumber" : 664,
         "functionName" : "InjectedScript.evaluate",
         "scriptId" : "54"
      }
   ]
}

[thvitt]

Downgrade auf Chromium 47 war erstmal ein Workaround. Nichtsdestotrotz sollte mittelfristig auf etwas umgestellt werden, dass langsamer entwickelt wird bzw. wo alte Versionen leicht verfügbar sind.

@Chleij, @wissenbach, wisst ihr, welche Probleme mit PhantomJS zur Umstellung auf Chromium geführt haben?

[wissenbach]

Dazu kann @Chleij wahrscheinlich mehr sagen, ich hatte noch mit PhantomJS gearbeitet.

[thvitt]

Die Umstellung auf PhantomJS hat das erstmal gelöst, #13 existiert immernoch