Make background-image and border-*-style accept CSSKeywordValue('none') as an acceptable value

third_party/WebKit/Source/core/css/CSSProperties.json5

Index: third_party/WebKit/Source/core/css/CSSProperties.json5
diff --git a/third_party/WebKit/Source/core/css/CSSProperties.json5 b/third_party/WebKit/Source/core/css/CSSProperties.json5
index 3ae557b0ccd77199099263928442e80448e0d447..d977be7e79ab4a63ce3fd191622fc4212808e6c8 100644
--- a/third_party/WebKit/Source/core/css/CSSProperties.json5
+++ b/third_party/WebKit/Source/core/css/CSSProperties.json5
@@ -563,7 +563,7 @@
       name: "background-image",
       custom_all: true,
       interpolable: true,
-      keywords: ["auto"],
+      keywords: ["auto", "none"],
       typedom_types: ["Image"],
     },
     {
@@ -627,6 +627,8 @@
       name: "border-bottom-style",
       initial: "initialBorderStyle",
       type_name: "EBorderStyle",
+      keywords: ["none"],
+      typedom_types: ["Image"],
     },
     {
       name: "border-bottom-width",
@@ -684,6 +686,8 @@
       name: "border-left-style",
       initial: "initialBorderStyle",
       type_name: "EBorderStyle",
+      keywords: ["none"],
+      typedom_types: ["Image"],
     },
     {
       name: "border-left-width",
@@ -701,6 +705,8 @@
       name: "border-right-style",
       initial: "initialBorderStyle",
       type_name: "EBorderStyle",
+      keywords: ["none"],
+      typedom_types: ["Image"],
     },
     {
       name: "border-right-width",
@@ -734,6 +740,8 @@
       name: "border-top-style",
       initial: "initialBorderStyle",
       type_name: "EBorderStyle",
+      keywords: ["none"],
+      typedom_types: ["Image"],
     },
     {
       name: "border-top-width",
@@ -2638,6 +2646,8 @@
     {
       name: "border-style",
       longhands: "border-top-style;border-right-style;border-bottom-style;border-left-style",
+      keywords: ["none"],
+      typedom_types: ["Image"],
     },
     {
       name: "border-top",