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 b99d87d6ed630971d36afefb2703902e98f479cc..192fe11c827e9bcb899634cc02f0c5ead96bbfd8 100644
--- a/third_party/WebKit/Source/build/scripts/templates/ComputedStyleBase.h.tmpl
+++ b/third_party/WebKit/Source/build/scripts/templates/ComputedStyleBase.h.tmpl
@@ -32,6 +32,11 @@
 
 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.
 class CORE_EXPORT ComputedStyleBase {
@@ -99,11 +104,6 @@ class CORE_EXPORT ComputedStyleBase {
   {{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