Fix focus ring damage sometimes being 1 pixel off.

third_party/WebKit/Source/core/style/ComputedStyleTest.cpp

Index: third_party/WebKit/Source/core/style/ComputedStyleTest.cpp
diff --git a/third_party/WebKit/Source/core/style/ComputedStyleTest.cpp b/third_party/WebKit/Source/core/style/ComputedStyleTest.cpp
index 90016dd2f4ee1d11d99d9f1cc61835f8f340cc07..76e7135702ed8990667fb2c5282132808e477b5c 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyleTest.cpp
+++ b/third_party/WebKit/Source/core/style/ComputedStyleTest.cpp
@@ -43,4 +43,29 @@ TEST(ComputedStyleTest, ClipPathEqual) {
   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