NaCl: Merge three global PP_Instance mappings into one

components/nacl/renderer/json_manifest.cc

Index: components/nacl/renderer/json_manifest.cc
diff --git a/components/nacl/renderer/json_manifest.cc b/components/nacl/renderer/json_manifest.cc
index e2063acd1d6c87a826917db7b7f78845827341cf..951894679760a82f6db2cf8f0afe7de9da57bbce 100644
--- a/components/nacl/renderer/json_manifest.cc
+++ b/components/nacl/renderer/json_manifest.cc
@@ -6,8 +6,6 @@
 
 #include <set>
 
-#include "base/containers/scoped_ptr_hash_map.h"
-#include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "components/nacl/renderer/nexe_load_manager.h"
@@ -380,21 +378,6 @@ void GrabUrlAndPnaclOptions(const Json::Value& url_spec,
 
 }  // namespace
 
-typedef base::ScopedPtrHashMap<PP_Instance, nacl::JsonManifest> JsonManifestMap;
-base::LazyInstance<JsonManifestMap> g_manifest_map = LAZY_INSTANCE_INITIALIZER;
-
-void AddJsonManifest(PP_Instance instance, scoped_ptr<JsonManifest> manifest) {
-  g_manifest_map.Get().add(instance, manifest.Pass());
-}
-
-JsonManifest* GetJsonManifest(PP_Instance instance) {
-  return g_manifest_map.Get().get(instance);
-}
-
-void DeleteJsonManifest(PP_Instance instance) {
-  g_manifest_map.Get().erase(instance);
-}
-
 JsonManifest::JsonManifest(const std::string& manifest_base_url,
                            const std::string& sandbox_isa,
                            bool nonsfi_enabled,