Add a fast-path for independent inherited properties

third_party/WebKit/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl

Index: third_party/WebKit/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl
diff --git a/third_party/WebKit/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl b/third_party/WebKit/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl
index 241ed5cbcfedaca0cf9d17382d629555c865440e..7a3c729f8a1df4fc92f1a2f094ac05e2e4f60c93 100644
--- a/third_party/WebKit/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl
+++ b/third_party/WebKit/Source/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl
@@ -43,6 +43,9 @@ state.style()->{{property.setter}}
 {{set_value(property)}}(toCSSPrimitiveValue(value).convertTo<{{property.type_name}}>());
 {%- endif %}
 {% endmacro %}
+{% macro set_is_inherited(property) %}
+state.style()->{{property.isInheritedSetter}}
+{% endmacro %}
 
 namespace blink {
 
@@ -58,6 +61,9 @@ namespace blink {
     {% else %}
     {{set_value(property)}}(ComputedStyle::{{property.initial}}());
     {% endif %}
+    {% if property.independent %}
+    {{set_is_inherited(property)}}(true);

[esprehn, 2016/07/19 03:46:26]

what is this code generating that you want to set true, false? It's hard to
understand what all is going on with the templates right here

[sashab, 2016/07/19 06:32:38]

It's setting that the property is inherited from its parent value, as opposed to
below where its setting that it's not inherited. Sorry if its not super clear,
trying to think of a way I can clean it up...

+    {% endif %}
 }
 
 {% endif %}
@@ -71,6 +77,9 @@ namespace blink {
     {% else %}
     {{set_value(property)}}(state.parentStyle()->{{property.getter}}());
     {% endif %}
+    {% if property.independent %}
+    {{set_is_inherited(property)}}(false);
+    {% endif %}
 }
 
 {% endif %}
@@ -78,6 +87,9 @@ namespace blink {
 {{declare_value_function(property_id)}}
 {
     {{convert_and_set_value(property)}}
+    {% if property.independent %}
+    {{set_is_inherited(property)}}(false);
+    {% endif %}
 }
 
 {% endif %}