Handle cache-control:no-store header in PNaCl translation cache

ppapi/api/private/ppb_nacl_private.idl

Index: ppapi/api/private/ppb_nacl_private.idl
diff --git a/ppapi/api/private/ppb_nacl_private.idl b/ppapi/api/private/ppb_nacl_private.idl
index 755b8d7ecd465f1df20de535a44d1c84acb4784b..4bb602f59c8261e8411d1d05aa74a8435b412e12 100644
--- a/ppapi/api/private/ppb_nacl_private.idl
+++ b/ppapi/api/private/ppb_nacl_private.idl
@@ -106,18 +106,19 @@ interface PPB_NaCl_Private {
    */
   PP_FileHandle CreateTemporaryFile([in] PP_Instance instance);
 
-  /* Create a temporary file, which will be deleted by the time the last
-   * handle is closed (or earlier on POSIX systems), to use for the nexe
-   * with the cache information given by |pexe_url|, |abi_version|, |opt_level|,
-   * |last_modified|, and |etag|. If the nexe is already present
-   * in the cache, |is_hit| is set to PP_TRUE and the contents of the nexe
-   * will be copied into the temporary file. Otherwise |is_hit| is set to
-   * PP_FALSE and the temporary file will be writeable.
-   * Currently the implementation is a stub, which always sets is_hit to false
-   * and calls the implementation of CreateTemporaryFile. In a subsequent CL
-   * it will call into the browser which will remember the association between
-   * the cache key and the fd, and copy the nexe into the cache after the
-   * translation finishes.
+  /* Create a temporary file, which will be deleted by the time the
+   * last handle is closed (or earlier on POSIX systems), to use for
+   * the nexe with the cache information given by |pexe_url|,
+   * |abi_version|, |opt_level|, |last_modified|, |etag|, and
+   * |has_no_store_header|. If the nexe is already present in the
+   * cache, |is_hit| is set to PP_TRUE and the contents of the nexe
+   * will be copied into the temporary file. Otherwise |is_hit| is set
+   * to PP_FALSE and the temporary file will be writeable.  Currently
+   * the implementation is a stub, which always sets is_hit to false
+   * and calls the implementation of CreateTemporaryFile. In a
+   * subsequent CL it will call into the browser which will remember
+   * the association between the cache key and the fd, and copy the
+   * nexe into the cache after the translation finishes.
    */
   int32_t GetNexeFd([in] PP_Instance instance,
                     [in] str_t pexe_url,
@@ -125,6 +126,7 @@ interface PPB_NaCl_Private {
                     [in] uint32_t opt_level,
                     [in] str_t last_modified,
                     [in] str_t etag,
+                    [in] PP_Bool has_no_store_header,
                     [out] PP_Bool is_hit,
                     [out] PP_FileHandle nexe_handle,
                     [in] PP_CompletionCallback callback);