Removed Doxygen groupings by ppb_, pp_, and ppp_. Added grouping by construct...

ppapi/c/ppb_instance.h

 /* Copyright (c) 2010 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef PPAPI_C_PPB_INSTANCE_H_
 #define PPAPI_C_PPB_INSTANCE_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_var.h"
 
 #define PPB_INSTANCE_INTERFACE "PPB_Instance;0.4"
 
 /**
  * @file
  * Defines the API ...
  *
- * @addtogroup PPB
+ * @addtogroup Interfaces
  * @{
  */
 
 struct PPB_Instance {
   /** Returns a reference to the DOM window containing this instance. */
   struct PP_Var (*GetWindowObject)(PP_Instance instance);
 
   /** Returns a reference to the DOM element containing this instance. */
   struct PP_Var (*GetOwnerElementObject)(PP_Instance instance);
 
@@ skipping 46 matching lines @@
    *     initialize this to a void exception if you do.
    *     See the function description for details.
    *
    * @return The result of the script execution,
    *     or a "void" var if execution failed.
    */
   struct PP_Var (*ExecuteScript)(PP_Instance instance,
                                  struct PP_Var script,
                                  struct PP_Var* exception);
 };
-
 /**
  * @}
- * End addtogroup PPB
  */
+
+
 #endif  /* PPAPI_C_PPB_INSTANCE_H_ */