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

ppapi/shared_impl/test_globals.cc

 // 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.
 
 #include "ppapi/shared_impl/test_globals.h"
 
 namespace ppapi {
 
 TestGlobals::TestGlobals()
     : ppapi::PpapiGlobals(),
       callback_tracker_(new CallbackTracker) {
 }
 
+TestGlobals::TestGlobals(PpapiGlobals::ForTest for_test)
+    : ppapi::PpapiGlobals(for_test),
+      callback_tracker_(new CallbackTracker) {
+}
+
 TestGlobals::~TestGlobals() {
 }
 
 ResourceTracker* TestGlobals::GetResourceTracker() {
   return &resource_tracker_;
 }
 
 VarTracker* TestGlobals::GetVarTracker() {
   return &var_tracker_;
 }
 
 CallbackTracker* TestGlobals::GetCallbackTrackerForInstance(
     PP_Instance instance) {
   return callback_tracker_.get();
 }
 
 FunctionGroupBase* TestGlobals::GetFunctionAPI(PP_Instance inst, ApiID id) {
   return NULL;
 }
 
 PP_Module TestGlobals::GetModuleForInstance(PP_Instance instance) {
   return 0;
 }
 
+base::Lock* TestGlobals::GetProxyLock() {
+  return NULL;
+}
+
 }  // namespace ppapi