Make the internal storage of policy::Schemas ref counted.

chrome/common/extensions/api/storage/storage_schema_manifest_handler.h

Index: chrome/common/extensions/api/storage/storage_schema_manifest_handler.h
diff --git a/chrome/common/extensions/api/storage/storage_schema_manifest_handler.h b/chrome/common/extensions/api/storage/storage_schema_manifest_handler.h
index d2406d615c4d624a928551ed10f62242ce138911..d3d5b3be628483e5f7459f4d96dc7957063ce622 100644
--- a/chrome/common/extensions/api/storage/storage_schema_manifest_handler.h
+++ b/chrome/common/extensions/api/storage/storage_schema_manifest_handler.h
@@ -9,7 +9,7 @@
 #include "chrome/common/extensions/manifest_handler.h"
 
 namespace policy {
-class SchemaOwner;
+class Schema;
 }
 
 namespace extensions {
@@ -21,11 +21,10 @@ class StorageSchemaManifestHandler : public ManifestHandler {
   virtual ~StorageSchemaManifestHandler();
 
   // Returns the managed storage schema defined for |extension|.
-  // If the schema is invalid then NULL is returned, and the failure reason
-  // is stored in |error|.
+  // If the schema is invalid then the failure reason is stored in |error|.

[dconnelly, 2013/10/29 16:43:58]

mention what is returned if it's invalid

[Joao da Silva, 2013/10/29 20:38:42]

Done.

   // This function does file I/O and must be called on a thread that allows I/O.
-  static scoped_ptr<policy::SchemaOwner> GetSchema(const Extension* extension,
-                                                   std::string* error);
+  static policy::Schema GetSchema(const Extension* extension,
+                                  std::string* error);
 
  private:
   // ManifestHandler implementation: