Revert 117399 - Make it possible to have 1 PpapiGlobals per thread. Update unit tests.

ppapi/shared_impl/ppapi_globals.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
 #ifndef PPAPI_SHARED_IMPL_PPAPI_GLOBALS_H_
 #define PPAPI_SHARED_IMPL_PPAPI_GLOBALS_H_
 
 #include "base/basictypes.h"
-#include "base/threading/thread_local.h"  // For testing purposes only.
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_module.h"
 #include "ppapi/shared_impl/api_id.h"
 #include "ppapi/shared_impl/ppapi_shared_export.h"
 
-namespace base {
-class Lock;
-}
-
 namespace ppapi {
 
 class CallbackTracker;
 class FunctionGroupBase;
 class ResourceTracker;
 class VarTracker;
 
 // Abstract base class
 class PPAPI_SHARED_EXPORT PpapiGlobals {
  public:
   PpapiGlobals();
-
-  // This constructor is to be used only for making a PpapiGlobal for testing
-  // purposes. This avoids setting the global static ppapi_globals_. For unit
-  // tests that use this feature, the "test" PpapiGlobals should be constructed
-  // using this method. See SetPpapiGlobalsOnThreadForTest for more information.
-  struct ForTest {};
-  PpapiGlobals(ForTest);
-
   virtual ~PpapiGlobals();
 
   // Getter for the global singleton.
-  inline static PpapiGlobals* Get() {
-    if (ppapi_globals_)
-      return ppapi_globals_;
-    // In unit tests, the following might be valid (see
-    // SetPpapiGlobalsOnThreadForTest). Normally, this will just return NULL.
-    return GetThreadLocalPointer();
-  }
-
-  // This allows us to set a given PpapiGlobals object as the PpapiGlobals for
-  // a given thread. After setting the PpapiGlobals for a thread, Get() will
-  // return that PpapiGlobals when Get() is called on that thread. Other threads
-  // are unaffected. This allows us to have tests which use >1 PpapiGlobals in
-  // the same process, e.g. for having 1 thread emulate the "host" and 1 thread
-  // emulate the "plugin".
-  //
-  // PpapiGlobals object must have been constructed using the "ForTest"
-  // parameter.
-  static void SetPpapiGlobalsOnThreadForTest(PpapiGlobals* ptr);
+  inline static PpapiGlobals* Get() { return ppapi_globals_; }
 
   // Retrieves the corresponding tracker.
   virtual ResourceTracker* GetResourceTracker() = 0;
   virtual VarTracker* GetVarTracker() = 0;
   virtual CallbackTracker* GetCallbackTrackerForInstance(
       PP_Instance instance) = 0;
-  virtual base::Lock* GetProxyLock() = 0;
 
   // Returns the function object corresponding to the given ID, or NULL if
   // there isn't one.
   virtual FunctionGroupBase* GetFunctionAPI(PP_Instance inst, ApiID id) = 0;
 
   // Returns the PP_Module associated with the given PP_Instance, or 0 on
   // failure.
   virtual PP_Module GetModuleForInstance(PP_Instance instance) = 0;
 
-  virtual bool IsHostGlobals() const;
-  virtual bool IsPluginGlobals() const;
-
  private:
-  // Return the thread-local pointer which is used only for unit testing. It
-  // should always be NULL when running in production. It allows separate
-  // threads to have distinct "globals".
-  static PpapiGlobals* GetThreadLocalPointer();
-
   static PpapiGlobals* ppapi_globals_;
 
   DISALLOW_COPY_AND_ASSIGN(PpapiGlobals);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_PPAPI_GLOBALS_H_