Revert of Move nested classes in ComputedStyleBase outside.

third_party/WebKit/Source/build/scripts/templates/ComputedStyleBase.h.tmpl

Index: third_party/WebKit/Source/build/scripts/templates/ComputedStyleBase.h.tmpl
diff --git a/third_party/WebKit/Source/build/scripts/templates/ComputedStyleBase.h.tmpl b/third_party/WebKit/Source/build/scripts/templates/ComputedStyleBase.h.tmpl
index 192fe11c827e9bcb899634cc02f0c5ead96bbfd8..b99d87d6ed630971d36afefb2703902e98f479cc 100644
--- a/third_party/WebKit/Source/build/scripts/templates/ComputedStyleBase.h.tmpl
+++ b/third_party/WebKit/Source/build/scripts/templates/ComputedStyleBase.h.tmpl
@@ -31,11 +31,6 @@
    } %}
 
 namespace blink {
-
-{% for subgroup in computed_style.subgroups %}
-{{define_field_group_class(subgroup)|indent(2)}}
-
-{% endfor %}
 
 // The generated portion of ComputedStyle. For more info, see the header comment
 // in ComputedStyle.h.
@@ -104,6 +99,11 @@
   {{field_templates[field.field_template].decl_public_methods(field)|indent(2)}}
 
   {% endfor %}
+ private:
+  {% for subgroup in computed_style.subgroups %}
+  {{define_field_group_class(subgroup)|indent(2)}}
+
+  {% endfor %}
 
  protected:
   // Constructor and destructor are protected so that only the parent class ComputedStyle