Plumb through cache_identity from manifest for first sketch of pnacl cache.

ppapi/native_client/src/trusted/plugin/manifest.h

 /*
  * Copyright (c) 2012 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.
  */
 
 // Manifest interface class.
 
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_MANIFEST_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_MANIFEST_H_
@@ skipping 23 matching lines @@
   // Some manifests (e.g., the pnacl coordinator manifest) need to access
   // resources from an extension origin distinct from the plugin's origin
   // (e.g., the pnacl coordinator needs to load llc, ld, and some libraries).
   // This out-parameter is true if this manifest lookup confers access to
   // a resource in the extension origin.
 
   // Gets the full program URL for the current sandbox ISA from the
   // manifest file. Sets |pnacl_translate| to |true| if the program is
   // requires pnacl translation.
   virtual bool GetProgramURL(nacl::string* full_url,
+                             nacl::string* cache_identity,
                              ErrorInfo* error_info,
                              bool* pnacl_translate) const = 0;
 
   // Resolves a URL relative to the manifest base URL
   virtual bool ResolveURL(const nacl::string& relative_url,
                           nacl::string* full_url,
                           ErrorInfo* error_info) const = 0;
 
   // Gets the file names from the "files" section of the manifest.  No
   // checking that the keys' values are proper ISA dictionaries -- it
   // is assumed that other consistency checks take care of that, and
   // that the keys are appropriate for use with ResolveKey.
   virtual bool GetFileKeys(std::set<nacl::string>* keys) const = 0;
 
   // Resolves a key from the "files" section to a fully resolved URL,
   // i.e., relative URL values are fully expanded relative to the
   // manifest's URL (via ResolveURL).  |pnacl_translate| tells
   // the caller whether the resolution requires a pnacl translation step.
   // If there was an error, details are reported via error_info.
   virtual bool ResolveKey(const nacl::string& key,
                           nacl::string* full_url,
+                          nacl::string* cache_identity,
                           ErrorInfo* error_info,
                           bool* pnacl_translate) const = 0;
 
  protected:
   NACL_DISALLOW_COPY_AND_ASSIGN(Manifest);
 };
 
 
 }  // namespace plugin
 
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_MANIFEST_H_