NaCl: Merge three global PP_Instance mappings into one

components/nacl/renderer/nexe_load_manager.cc

Index: components/nacl/renderer/nexe_load_manager.cc
diff --git a/components/nacl/renderer/nexe_load_manager.cc b/components/nacl/renderer/nexe_load_manager.cc
index 86c51c73a986460461d61a7e928d57e5d9007ebe..bb1f4157978073cd74b5d31a1f4f1afe9bfbdcce 100644
--- a/components/nacl/renderer/nexe_load_manager.cc
+++ b/components/nacl/renderer/nexe_load_manager.cc
@@ -5,8 +5,6 @@
 #include "components/nacl/renderer/nexe_load_manager.h"
 
 #include "base/command_line.h"
-#include "base/containers/scoped_ptr_hash_map.h"
-#include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_tokenizer.h"
@@ -80,10 +78,6 @@ std::string LookupAttribute(const std::map<std::string, std::string>& args,
   return std::string();
 }
 
-typedef base::ScopedPtrHashMap<PP_Instance, NexeLoadManager> NexeLoadManagerMap;
-base::LazyInstance<NexeLoadManagerMap> g_load_manager_map =
-    LAZY_INSTANCE_INITIALIZER;
-
 }  // namespace
 
 NexeLoadManager::NexeLoadManager(
@@ -116,32 +110,6 @@ NexeLoadManager::~NexeLoadManager() {
     base::SharedMemory::CloseHandle(crash_info_shmem_handle_);
 }
 
-void NexeLoadManager::Create(PP_Instance instance) {
-  scoped_ptr<NexeLoadManager> new_load_manager(new NexeLoadManager(instance));
-  NexeLoadManagerMap& map = g_load_manager_map.Get();
-  DLOG_IF(ERROR, map.count(instance) != 0) << "Instance count should be 0";
-  map.add(instance, new_load_manager.Pass());
-}
-
-NexeLoadManager* NexeLoadManager::Get(PP_Instance instance) {
-  NexeLoadManagerMap& map = g_load_manager_map.Get();
-  NexeLoadManagerMap::iterator iter = map.find(instance);
-  if (iter != map.end())
-    return iter->second;
-  return NULL;
-}
-
-void NexeLoadManager::Delete(PP_Instance instance) {
-  NexeLoadManagerMap& map = g_load_manager_map.Get();
-  // The erase may call NexeLoadManager's destructor prior to removing it from
-  // the map. In that case, it is possible for the trusted Plugin to re-enter
-  // the NexeLoadManager (e.g., by calling ReportLoadError). Passing out the
-  // NexeLoadManager to a local scoped_ptr just ensures that its entry is gone
-  // from the map prior to the destructor being invoked.
-  scoped_ptr<NexeLoadManager> temp(map.take(instance));
-  map.erase(instance);
-}
-
 void NexeLoadManager::NexeFileDidOpen(int32_t pp_error,
                                       const base::File& file,
                                       int32_t http_status,