Issue 3486 - Issue reporter: move frame scanning into the content process

lib/child/dataCollector.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 41 matching lines @@
       data: null
     });
   }
 
   let window = Services.wm.getOuterWindowWithId(outerWindowID);
   if (window)
   {
     Task.spawn(function*()
     {
       let data = {};
+      data.opener = window.opener ? window.opener.location.href : null;
+      data.referrer = window.document.referrer;
+      data.frames = yield scanFrames(window);
       data.screenshot = yield createScreenshot(window, screenshotWidth);
       return data;
     }).then(success, error);
   }
 }
 
+function scanFrames(window)
+{
+  let frames = [];
+  for (let i = 0; i < window.frames.length; i++)
+  {
+    let frame = window.frames[i];
+    frames.push({
+      url: frame.location.href,
+      frames: scanFrames(frame)
+    });
+  }
+  return frames;
+}
+
 function* createScreenshot(window, screenshotWidth)
 {
   let canvas = window.document.createElement("canvas");
   canvas.width = screenshotWidth;
 
   let context = canvas.getContext("2d");
   let wndWidth = window.document.documentElement.scrollWidth;
   let wndHeight = window.document.documentElement.scrollHeight;
 
   // Copy scaled screenshot of the webpage, according to the specified width.
@@ skipping 25 matching lines @@
     {
       // Take a break every 5000 bytes to prevent browser hangs
       yield new Promise((resolve, reject) => Utils.runAsync(resolve));
     }
   }
 
   // Convert the data into an image URL
   context.putImageData(pixelData, 0, 0);
   return canvas.toDataURL("image/png");
 }