Added CSSPropertyAPI.h.tmpl to generate CSSPropertyAPI.h.

third_party/WebKit/Source/core/css/properties/CSSPropertyAPIMethods.json5

Index: third_party/WebKit/Source/core/css/properties/CSSPropertyAPIMethods.json5
diff --git a/third_party/WebKit/Source/core/css/properties/CSSPropertyAPIMethods.json5 b/third_party/WebKit/Source/core/css/properties/CSSPropertyAPIMethods.json5
index d30344ce51a6e36e6e9e5c7812ee7e10cd8ee6c3..e0e62b96846b274232321453a284d13148669bb0 100644
--- a/third_party/WebKit/Source/core/css/properties/CSSPropertyAPIMethods.json5
+++ b/third_party/WebKit/Source/core/css/properties/CSSPropertyAPIMethods.json5
@@ -22,18 +22,30 @@
 		parameters: {
 			default: "",
 			valid_type: "str",
-		}
+		},
+
+		// - comment
+		// A string comment describing the API method. This comment will be
+		// placed in the code above the method definition in CSSPropertyAPI.h.
+		// This comment should be defined as a list of strings, each no longer than
+		// 72 chars.
+		comment: {

[sashab, 2017/02/10 02:47:09]

Rename to 'description'

+			default: [],
+			valid_type: "list",
+		},
 	},
 	data: [
 		{
 		  name: "parseSingleValue",
 		  return_type: "const CSSValue*",
-		  parameters: "(CSSParserTokenRange&, const CSSParserContext*)"
+		  parameters: "(CSSParserTokenRange&, const CSSParserContext*)",
+		  comment: ["Parses a single CSS property and returns the corresponding CSSValue. If the", " input is invalid it returns nullptr."],

[sashab, 2017/02/10 02:47:09]

Change comment to single string

 		},
 		{
 		  name: "parseShorthand",
 		  return_type: "bool",
-		  parameters: "(bool, CSSParserTokenRange&, const CSSParserContext*)"
+		  parameters: "(bool, CSSParserTokenRange&, const CSSParserContext*)",
+		  comment: ["Returns true if the property can be parsed as a shorthand."],
 		},
 	]
 }