NaCl: Merge three global PP_Instance mappings into one

components/nacl/renderer/nexe_load_manager.h

Index: components/nacl/renderer/nexe_load_manager.h
diff --git a/components/nacl/renderer/nexe_load_manager.h b/components/nacl/renderer/nexe_load_manager.h
index bdfab839d44167318aa10d049b508935b981c6b0..0321aad073741a59c4c150250c2e71a9861f3f22 100644
--- a/components/nacl/renderer/nexe_load_manager.h
+++ b/components/nacl/renderer/nexe_load_manager.h
@@ -30,13 +30,9 @@ class TrustedPluginChannel;
 // nexe.
 class NexeLoadManager {
  public:
+  explicit NexeLoadManager(PP_Instance instance);
   ~NexeLoadManager();
 
-  static void Create(PP_Instance instance);
-  // Non-owning pointer.
-  static NexeLoadManager* Get(PP_Instance instance);
-  static void Delete(PP_Instance instance);
-
   void NexeFileDidOpen(int32_t pp_error,
                        const base::File& file,
                        int32_t http_status,
@@ -127,8 +123,6 @@ class NexeLoadManager {
  private:
   DISALLOW_COPY_AND_ASSIGN(NexeLoadManager);
 
-  explicit NexeLoadManager(PP_Instance instance);
-
   void ReportDeadNexe();
 
   // Copies a crash log to the console, one line at a time.