Added CSSPropertyDescriptor.h.tmpl to generate CSSPropertyDescriptor.h.

third_party/WebKit/Source/build/scripts/make_css_property_apis.py

Index: third_party/WebKit/Source/build/scripts/make_css_property_apis.py
diff --git a/third_party/WebKit/Source/build/scripts/make_css_property_apis.py b/third_party/WebKit/Source/build/scripts/make_css_property_apis.py
index ed317cd863c0c38d5d56ae14d4f42c52cb46ff28..5b5376b29f74ea58b7254baf9e7e712098309fe3 100755
--- a/third_party/WebKit/Source/build/scripts/make_css_property_apis.py
+++ b/third_party/WebKit/Source/build/scripts/make_css_property_apis.py
@@ -44,6 +44,7 @@ class CSSPropertyAPIWriter(StyleBuilderWriter):
 
         self._outputs = {
             'CSSPropertyDescriptor.cpp': self.generate_property_descriptor_cpp,
+            'CSSPropertyDescriptor.h': self.generate_property_descriptor_h,
             'CSSPropertyAPI.h': self.generate_property_api,
         }
 
@@ -93,6 +94,13 @@ class CSSPropertyAPIWriter(StyleBuilderWriter):
             'ordered_api_method_names': self.ordered_api_method_names,
         }
 
+    @template_expander.use_jinja('CSSPropertyDescriptor.h.tmpl')
+    def generate_property_descriptor_h(self):
+        return {
+            'ordered_api_method_names': self.ordered_api_method_names,
+            'all_api_methods': self.all_api_methods,
+        }
+
     @template_expander.use_jinja('CSSPropertyAPI.h.tmpl')
     def generate_property_api(self):
         return {