Align srcset parsing with spec changes

Source/core/html/parser/HTMLSrcsetParserTest.cpp

 // Copyright 2014 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 "config.h"
 #include "core/html/parser/HTMLSrcsetParser.h"
 
 #include <gtest/gtest.h>
 #include <limits.h>
 
@@ skipping 28 matching lines @@
         {2.0, -1, "", "1x,,  ,   x    ,2x  ", "1x,", 1.0, -1},
         {2.0, -1, "", "1x,,  ,   x    ,2x  ", "1x,", 1.0, -1},
         {2.0, -1, "", "data:image/png;base64,iVBORw0KGgoAAAANSUhEUg 1x, 2x.gif 2x", "2x.gif", 2.0, -1},
         {2.0, -1, "", "data:image/png;base64,iVBORw0KGgoAAAANSUhEUg 2x, 1x.gif 1x", "data:image/png;base64,iVBORw0KGgoAAAANSUhEUg", 2.0, -1},
         {2.0, -1, "", "1x,,  ,   x    ,2x  , 1x.gif, 3x, 4x.gif 4x 100h, 5x.gif 5, dx.gif dx, 2x.gif   2x ,", "2x.gif", 2.0, -1},
         {4.0, -1, "", "1x,,  ,   x    ,2x  , 1x.gif, 3x, 4x.gif 4x 100h, 5x.gif 5, dx.gif dx, 2x.gif   2x ,", "4x.gif", 4.0, -1},
         {1.0, -1, "", "1x,,  ,   x    ,2x  , 1x.gif, 3x, 4x.gif 4x 100h, 5x.gif 5, dx.gif dx, 2x.gif   2x ,", "1x,", 1.0, -1},
         {5.0, -1, "", "1x,,  ,   x    ,2x  , 1x.gif, 3x, 4x.gif 4x 100h, 5x.gif 5, dx.gif dx, 2x.gif   2x ,", "4x.gif", 4.0, -1},
         {1.0, 400, "", "400.gif 400w, 6000.gif 6000w", "400.gif", 1.0, 400},
         {2.0, 400, "", "400.gif 400w, 6000.gif 6000w", "6000.gif", 15.0, 6000},
+        {1.0, 400, "src.gif", "800.gif 800w", "800.gif", 2.0, 800},

[eseidel, 2014/04/13 20:57:55]

Only one test?

         {1.0, 0, "", "400.gif 400w, 6000.gif 6000w", "400.gif", std::numeric_limits<float>::infinity(), 400},
         {0, 0, 0, 0, 0, 0} // Do not remove the terminator line.
     };
 
     for (unsigned i = 0; testCases[i].srcInput; ++i) {
         TestCase test = testCases[i];
         ImageCandidate candidate = bestFitSourceForImageAttributes(test.deviceScaleFactor, test.effectiveSize, test.srcInput, test.srcsetInput);
         ASSERT_EQ(test.outputScaleFactor, candidate.scaleFactor());
         ASSERT_EQ(test.outputResourceWidth, candidate.resourceWidth());
         ASSERT_STREQ(test.outputURL, candidate.toString().ascii().data());
     }
 }
 
 } // namespace