Index: chrome/browser/resources/get_salient_image_url.js |
diff --git a/chrome/browser/resources/get_salient_image_url.js b/chrome/browser/resources/get_salient_image_url.js |
deleted file mode 100644 |
index cb3020e6d5dba0512691e2d50e1dae2df87cc719..0000000000000000000000000000000000000000 |
--- a/chrome/browser/resources/get_salient_image_url.js |
+++ /dev/null |
@@ -1,67 +0,0 @@ |
-// Copyright 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. |
- |
-/* |
- * Looks on the page to find the image that could be the most representative |
- * one. |
- */ |
-(function() { |
- // Extract the referrer policy from the page. |
- var referrerPolicy = 'default'; |
- var metaTags = document.getElementsByTagName('meta'); |
- for (var i = 0; i < metaTags.length; ++i) { |
- if (metaTags[i].name.toLowerCase() == 'referrer') { |
- referrerPolicy = metaTags[i].content.toLowerCase(); |
- break; |
- } |
- } |
- |
- // See what to use for JSON. Some pages use a library that overrides JSON. |
- var jsonEncoder = JSON.stringify; |
- if (!jsonEncoder) |
- jsonEncoder = JSON.encode; |
- |
- // First look if there is an Open Graph Image property available. |
- var ogImage = document.querySelector('meta[property=\"og:image\"]'); |
- if (ogImage) { |
- // Checks that the url in ogImage has a path that contains more than just a |
- // simple '/'. |
- var url = ogImage.content; |
- var location = document.createElement('a'); |
- location.href = url; |
- if (location.pathname.length > 1) { |
- return jsonEncoder({ |
- 'imageUrl': url, |
- 'referrerPolicy': referrerPolicy |
- }); |
- } |
- } |
- |
- // Iterates through the images on the page, find the largest one that doesn't |
- // look like a banner. |
- var maxPointSize = 0; |
- var maxImage = null; |
- |
- var images = document.getElementsByTagName('img'); |
- for (var i = 0; i < images.length; i++) { |
- var currentImage = images[i]; |
- var aspectRatio = currentImage.width / currentImage.height; |
- if (aspectRatio >= 2.4 || aspectRatio <= 0.5) |
- continue; // Skip weirdly shaped images. Those are ads or headers. |
- var pointSize = currentImage.width * currentImage.height; |
- if (pointSize > maxPointSize) { |
- maxPointSize = pointSize; |
- maxImage = currentImage; |
- } |
- } |
- |
- // Only keep images larger than 320*160. |
- if (maxPointSize <= 51200.0 || maxImage === null) |
- return ''; |
- |
- return jsonEncoder({ |
- 'imageUrl': maxImage.src, |
- 'referrerPolicy': referrerPolicy |
- }); |
-})(); |