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

ppapi/c/pp_size.h

Index: ppapi/c/pp_size.h
===================================================================
--- ppapi/c/pp_size.h	(revision 72639)
+++ ppapi/c/pp_size.h	(working copy)
@@ -8,30 +8,37 @@
 /**
  * @file
  * Defines the API ...
- *
- * @addtogroup PP
- * @{
  */
 
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_stdint.h"
 
+/**
+ * @addtogroup Structs
+ * @{
+ */
 struct PP_Size {
   int32_t width;
   int32_t height;
 };
+/**
+ * @}
+ */
+
 PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_Size, 8);
 
+/**
+ * @addtogroup Functions
+ * @{
+ */
 PP_INLINE struct PP_Size PP_MakeSize(int32_t w, int32_t h) {
   struct PP_Size ret;
   ret.width = w;
   ret.height = h;
   return ret;
 }
-
 /**
  * @}
- * End addtogroup PP
  */
 #endif  /* PPAPI_C_PP_SIZE_H_ */