Fix nits in content/browser/appcache/

content/public/browser/resource_context.h

Index: content/public/browser/resource_context.h
diff --git a/content/public/browser/resource_context.h b/content/public/browser/resource_context.h
index 1c21de0daaeadda0ede089dcfcd625bb2cc4561b..1f3f81c2449c3f86732d74766ebfa9a5571bfa3c 100644
--- a/content/public/browser/resource_context.h
+++ b/content/public/browser/resource_context.h
@@ -16,10 +16,6 @@
 
 class GURL;
 
-namespace content {
-class AppCacheService;
-}
-
 namespace net {
 class ClientCertStore;
 class HostResolver;
@@ -29,6 +25,8 @@ class URLRequestContext;
 
 namespace content {
 
+class AppCacheService;
+
 // ResourceContext contains the relevant context information required for
 // resource loading. It lives on the IO thread, although it is constructed on
 // the UI thread. It must be destructed on the IO thread.