Fix focus ring damage sometimes being 1 pixel off.

third_party/WebKit/Source/core/style/ComputedStyleTest.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 "core/style/ComputedStyle.h"
 
 #include "core/style/ClipPathOperation.h"
 #include "core/style/ShapeValue.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 25 matching lines @@
   RefPtr<BasicShapeCircle> shape = BasicShapeCircle::create();
   RefPtr<ShapeClipPathOperation> path1 = ShapeClipPathOperation::create(shape);
   RefPtr<ShapeClipPathOperation> path2 = ShapeClipPathOperation::create(shape);
   RefPtr<ComputedStyle> style1 = ComputedStyle::create();
   RefPtr<ComputedStyle> style2 = ComputedStyle::create();
   style1->setClipPath(path1);
   style2->setClipPath(path2);
   ASSERT_EQ(*style1, *style2);
 }
 
+TEST(ComputedStyleTest, FocusRingWidth) {
+  RefPtr<ComputedStyle> style = ComputedStyle::create();
+  style->setEffectiveZoom(3.5);
+#if OS(MACOSX)
+  style->setOutlineStyle(BorderStyleSolid);
+  ASSERT_EQ(3, style->getOutlineStrokeWidthForFocusRing());
+#else
+  ASSERT_EQ(3.5, style->getOutlineStrokeWidthForFocusRing());
+  style->setEffectiveZoom(0.5);
+  ASSERT_EQ(1, style->getOutlineStrokeWidthForFocusRing());
+#endif
+}
+
+TEST(ComputedStyleTest, FocusRingOutset) {
+  RefPtr<ComputedStyle> style = ComputedStyle::create();
+  style->setOutlineStyle(BorderStyleSolid);
+  style->setOutlineStyleIsAuto(OutlineIsAutoOn);
+  style->setEffectiveZoom(4.75);
+#if OS(MACOSX)
+  ASSERT_EQ(4, style->outlineOutsetExtent());
+#else
+  ASSERT_EQ(3, style->outlineOutsetExtent());
+#endif
+}
+
 }  // namespace blink