Enable float source size

Source/core/css/parser/SizesAttributeParserTest.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/css/parser/SizesAttributeParser.h"
 
 #include "core/MediaTypeNames.h"
 #include "core/css/MediaValuesCached.h"
 
 #include <gtest/gtest.h>
 
 namespace blink {
 
 typedef struct {
     const char* input;
-    const unsigned effectiveSize;
+    const float effectiveSize;
     const bool viewportDependant;
 } TestCase;
 
 TEST(SizesAttributeParserTest, Basic)
 {
     TestCase testCases[] = {
         {"screen", 500, true},
         {"(min-width:500px)", 500, true},
         {"(min-width:500px) 200px", 200, false},
         {"(min-width:500px) 50vw", 250, true},
@@ skipping 33 matching lines @@
         {"(max-width: 3000px) 200px, 400px", 200, false},
         {"(max-width: 3000px) 20em, 40em", 320, false},
         {"(max-width: 3000px) 0, 40em", 0, false},
         {"(max-width: 3000px) 0px, 40em", 0, false},
         {"(max-width: 3000px) 50vw, 40em", 250, true},
         {"(max-width: 3000px) 50px, 40vw", 50, false},
         {"((),1px", 500, true},
         {"{{},1px", 500, true},
         {"[[],1px", 500, true},
         {"x(x(),1px", 500, true},
+        {"(max-width: 3000px) 50.5px, 40vw", 50.5, false},
         {0, 0, false} // Do not remove the terminator line.
     };
 
     MediaValuesCached::MediaValuesCachedData data;
     data.viewportWidth = 500;
     data.viewportHeight = 500;
     data.deviceWidth = 500;
     data.deviceHeight = 500;
     data.devicePixelRatio = 2.0;
     data.colorBitsPerComponent = 24;
     data.monochromeBitsPerComponent = 0;
     data.primaryPointerType = PointerTypeFine;
     data.defaultFontSize = 16;
     data.threeDEnabled = true;
     data.mediaType = MediaTypeNames::screen;
     data.strictMode = true;
     RefPtr<MediaValues> mediaValues = MediaValuesCached::create(data);
 
     for (unsigned i = 0; testCases[i].input; ++i) {
         SizesAttributeParser parser(mediaValues, testCases[i].input);
         ASSERT_EQ(testCases[i].effectiveSize, parser.length());
         ASSERT_EQ(testCases[i].viewportDependant, parser.viewportDependant());
     }
 }
 
 } // namespace