Simplify whitespace handling in build/ Jinja templates

Source/build/scripts/templates/MakeNames.h.tmpl

-{% from "macros.tmpl" import license -%}
+{% from "macros.tmpl" import license %}
 {{ license() }}
 
 #ifndef {{namespace}}Names_h
 #define {{namespace}}Names_h
-
-{%- if export %}
+{# FIXME: add blank line #}
+{% if export %}
 #include "platform/PlatformExport.h"
-{%- endif %}
+{% endif %}
 #include "wtf/text/AtomicString.h"
 
 namespace WebCore {
 namespace {{namespace}}Names {
 
 #ifndef {{namespace|to_macro_style}}_NAMES_HIDE_GLOBALS
-
-{%- for entry in entries|sort %}
-{%- if export %}
+{# FIXME: add blank line #}
+{% for entry in entries|sort %}
+{% if export %}
 {{export}} extern const WTF::AtomicString& {{entry|symbol}};
-{%- else %}
+{% else %}
 extern const WTF::AtomicString {{entry|symbol}};
-{%- endif %}
-{%- endfor %}
+{% endif %}
+{% endfor %}
 
 #endif // {{namespace|to_macro_style}}_NAMES_HIDE_GLOBALS
 
 {{export}} void init();
 
 } // {{namespace}}Names
 } // WebCore
 
 #endif