Avoid rounding down viewport dimensions in Media Queries

third_party/WebKit/Source/core/css/MediaQueryEvaluatorTest.cpp

Index: third_party/WebKit/Source/core/css/MediaQueryEvaluatorTest.cpp
diff --git a/third_party/WebKit/Source/core/css/MediaQueryEvaluatorTest.cpp b/third_party/WebKit/Source/core/css/MediaQueryEvaluatorTest.cpp
index 6770c7e4d7155579b1ce622d917d7b1d6e30b481..25ee2ce726fc27c3786f07e45e45df8198d70f64 100644
--- a/third_party/WebKit/Source/core/css/MediaQueryEvaluatorTest.cpp
+++ b/third_party/WebKit/Source/core/css/MediaQueryEvaluatorTest.cpp
@@ -92,6 +92,30 @@ TestCase viewportTestCases[] = {
     {0, 0} // Do not remove the terminator line.
 };
 
+TestCase floatViewportTestCases[] = {
+    {"all and (min-width: 600.5px)", 1},
+    {"(min-width: 600px)", 1},
+    {"(min-width: 600.5px)", 1},
+    {"(min-width: 601px)", 0},
+    {"(max-width: 600px)", 0},
+    {"(max-width: 600.5px)", 1},
+    {"(max-width: 601px)", 1},
+    {"(width: 600.5px)", 1},
+    {"(width: 601px)", 0},
+    {"(min-height: 700px)", 1},
+    {"(min-height: 700.125px)", 1},
+    {"(min-height: 701px)", 0},
+    {"(min-height: 700.126px)", 0},
+    {"(max-height: 701px)", 1},
+    {"(max-height: 700.125px)", 1},
+    {"(max-height: 700px)", 0},
+    {"(height: 700.125px)", 1},
+    {"(height: 700.126px)", 0},
+    {"(height: 700.124px)", 0},
+    {"(height: 701px)", 0},
+    {0, 0} // Do not remove the terminator line.
+};
+
 TestCase printTestCases[] = {
     {"print and (min-resolution: 1dppx)", 1},
     {"print and (min-resolution: 118dpcm)", 1},
@@ -159,4 +183,15 @@ TEST(MediaQueryEvaluatorTest, DynamicNoView)
     EXPECT_FALSE(mediaQueryEvaluator.eval(querySet.get()));
 }
 
+TEST(MediaQueryEvaluatorTest, CachedFloatViewport)
+{
+    MediaValuesCached::MediaValuesCachedData data;
+    data.viewportWidth = 600.5;
+    data.viewportHeight = 700.125;
+    RefPtrWillBeRawPtr<MediaValues> mediaValues = MediaValuesCached::create(data);
+
+    MediaQueryEvaluator mediaQueryEvaluator(*mediaValues);
+    testMQEvaluator(floatViewportTestCases, mediaQueryEvaluator);
+}
+
 } // namespace