Enable float source size

Source/core/html/parser/HTMLSrcsetParserTest.cpp

Index: Source/core/html/parser/HTMLSrcsetParserTest.cpp
diff --git a/Source/core/html/parser/HTMLSrcsetParserTest.cpp b/Source/core/html/parser/HTMLSrcsetParserTest.cpp
index 01d549b0000b18ed18bb82a66cf2b2da3e638f8f..33f52822888caf443297cc69473791dc7ab7eb28 100644
--- a/Source/core/html/parser/HTMLSrcsetParserTest.cpp
+++ b/Source/core/html/parser/HTMLSrcsetParserTest.cpp
@@ -12,7 +12,7 @@ namespace blink {
 
 typedef struct {
     float deviceScaleFactor;
-    int effectiveSize;
+    float effectiveSize;
     const char* srcInput;
     const char* srcsetInput;
     const char* outputURL;
@@ -32,6 +32,8 @@ TEST(ImageCandidateTest, Basic)
 TEST(HTMLSrcsetParserTest, Basic)
 {
     TestCase testCases[] = {
+        {2.0, 0.5, "", "data:,a 1w, data:,b 2x", "data:,a", 2.0, 1},
+        {2.0, 1, "", "data:,a 2w, data:,b 2x", "data:,a", 2.0, 2},
         {2.0, -1, "", "1x.gif 1x, 2x.gif 2x", "2x.gif", 2.0, -1},
         {2.0, -1, "", "1x.gif 1q, 2x.gif 2x", "2x.gif", 2.0, -1},
         {1.0, -1, "", "1x.gif 1q, 2x.gif 2x", "1x.gif", 1.0, -1},