Avoid downloading unsupported `<source>` types in HTMLPreloadScanner

third_party/WebKit/Source/core/html/parser/HTMLPreloadScannerTest.cpp

 // 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.
 
 #include "core/html/parser/HTMLPreloadScanner.h"
 
 #include "core/MediaTypeNames.h"
 #include "core/css/MediaValuesCached.h"
 #include "core/fetch/ClientHintsPreferences.h"
 #include "core/frame/Settings.h"
@@ skipping 320 matching lines @@
 
     for (const auto& testCase : testCases)
         test(testCase);
 }
 
 TEST_F(HTMLPreloadScannerTest, testPicture)
 {
     TestCase testCases[] = {
         {"http://example.test", "<picture><source srcset='srcset_bla.gif'><img src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 0},
         {"http://example.test", "<picture><source sizes='50vw' srcset='srcset_bla.gif'><img src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 250},
-        {"http://example.test", "<picture><source sizes='50vw' srcset='srcset_bla.gif'><img sizes='50w' src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 250},
-        {"http://example.test", "<picture><source srcset='srcset_bla.gif' sizes='50vw'><img sizes='50w' src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 250},
-        {"http://example.test", "<picture><source srcset='srcset_bla.gif'><img sizes='50w' src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 0},
+        {"http://example.test", "<picture><source sizes='50vw' srcset='srcset_bla.gif'><img sizes='50vw' src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 250},
+        {"http://example.test", "<picture><source srcset='srcset_bla.gif' sizes='50vw'><img sizes='50vw' src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 250},
+        {"http://example.test", "<picture><source srcset='srcset_bla.gif'><img sizes='50vw' src='bla.gif'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 0},
+        {"http://example.test", "<picture><source media='(max-width: 900px)' srcset='srcset_bla.gif'><img sizes='50vw' srcset='bla.gif 500w'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 0},
+        {"http://example.test", "<picture><source media='(max-width: 400px)' srcset='srcset_bla.gif'><img sizes='50vw' srcset='bla.gif 500w'></picture>", "bla.gif", "http://example.test/", Resource::Image, 250},
+        {"http://example.test", "<picture><source type='image/webp' srcset='srcset_bla.gif'><img sizes='50vw' srcset='bla.gif 500w'></picture>", "srcset_bla.gif", "http://example.test/", Resource::Image, 0},
+        {"http://example.test", "<picture><source type='image/jp2' srcset='srcset_bla.gif'><img sizes='50vw' srcset='bla.gif 500w'></picture>", "bla.gif", "http://example.test/", Resource::Image, 250},
+        {"http://example.test", "<picture><source media='(max-width: 900px)' type='image/jp2' srcset='srcset_bla.gif'><img sizes='50vw' srcset='bla.gif 500w'></picture>", "bla.gif", "http://example.test/", Resource::Image, 250},
+        {"http://example.test", "<picture><source type='image/webp' media='(max-width: 400px)' srcset='srcset_bla.gif'><img sizes='50vw' srcset='bla.gif 500w'></picture>", "bla.gif", "http://example.test/", Resource::Image, 250},
+        {"http://example.test", "<picture><source type='image/jp2' media='(max-width: 900px)' srcset='srcset_bla.gif'><img sizes='50vw' srcset='bla.gif 500w'></picture>", "bla.gif", "http://example.test/", Resource::Image, 250},
+        {"http://example.test", "<picture><source media='(max-width: 400px)' type='image/webp' srcset='srcset_bla.gif'><img sizes='50vw' srcset='bla.gif 500w'></picture>", "bla.gif", "http://example.test/", Resource::Image, 250},
     };
 
     for (const auto& testCase : testCases)
         test(testCase);
 }
 
 TEST_F(HTMLPreloadScannerTest, testReferrerPolicy)
 {
     ReferrerPolicyTestCase testCases[] = {
         { "http://example.test", "<img src='bla.gif'/>", "bla.gif", "http://example.test/", Resource::Image, 0, ReferrerPolicyDefault },
@@ skipping 45 matching lines @@
         {"http://example.test", "<link rel=preload href=bla as=track>", "bla", "http://example.test/", Resource::TextTrack, 0},
         {"http://example.test", "<link rel=preload href=bla as=image media=\"(max-width: 800px)\">", "bla", "http://example.test/", Resource::Image, 0},
         {"http://example.test", "<link rel=preload href=bla as=image media=\"(max-width: 400px)\">", nullptr, "http://example.test/", Resource::Image, 0},
     };
 
     for (const auto& testCase : testCases)
         test(testCase);
 }
 
 } // namespace blink