Update PPAPI IDL generator to define versioned structs, and unversioned typedef.

ppapi/c/ppb_mouse_lock.h

Index: ppapi/c/ppb_mouse_lock.h
diff --git a/ppapi/c/ppb_mouse_lock.h b/ppapi/c/ppb_mouse_lock.h
index b04e7a0962bd5133465579efb5a6a10630af75c0..7d807cd6b6d7ab8ac7658c2c289ffbb7c2f59efa 100644
--- a/ppapi/c/ppb_mouse_lock.h
+++ b/ppapi/c/ppb_mouse_lock.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From ppb_mouse_lock.idl modified Mon Nov 28 10:59:14 2011. */
+/* From ppb_mouse_lock.idl modified Wed Dec 21 19:08:34 2011. */
 
 #ifndef PPAPI_C_PPB_MOUSE_LOCK_H_
 #define PPAPI_C_PPB_MOUSE_LOCK_H_
@@ -34,7 +34,7 @@
  * useful for certain classes of applications, especially first-person
  * perspective 3D applications and 3D modeling software.
  */
-struct PPB_MouseLock {
+struct PPB_MouseLock_1_0 {
   /**
    * LockMouse() requests the mouse to be locked. The browser will permit mouse
    * lock only while the tab is in fullscreen mode.
@@ -73,6 +73,8 @@ struct PPB_MouseLock {
    */
   void (*UnlockMouse)(PP_Instance instance);
 };
+
+typedef struct PPB_MouseLock_1_0 PPB_MouseLock;
 /**
  * @}
  */