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

ppapi/shared_impl/test_globals.h

Index: ppapi/shared_impl/test_globals.h
diff --git a/ppapi/shared_impl/test_globals.h b/ppapi/shared_impl/test_globals.h
index 9c58fd3f4707d9b26ebce08b54178df8084029af..14091af08d154bb6fa3c8748a3e31e7abb52426c 100644
--- a/ppapi/shared_impl/test_globals.h
+++ b/ppapi/shared_impl/test_globals.h
@@ -8,12 +8,13 @@
 #include "base/compiler_specific.h"
 #include "ppapi/shared_impl/callback_tracker.h"
 #include "ppapi/shared_impl/ppapi_globals.h"
+#include "ppapi/shared_impl/ppapi_shared_export.h"
 #include "ppapi/shared_impl/resource_tracker.h"
 #include "ppapi/shared_impl/var_tracker.h"
 
 namespace ppapi {
 
-class TestVarTracker : public VarTracker {
+class PPAPI_SHARED_EXPORT TestVarTracker : public VarTracker {
  public:
   TestVarTracker() {}
   virtual ~TestVarTracker() {}
@@ -24,7 +25,7 @@ class TestVarTracker : public VarTracker {
 
 // Implementation of PpapiGlobals for tests that don't need either the host- or
 // plugin-specific implementations.
-class TestGlobals : public PpapiGlobals {
+class PPAPI_SHARED_EXPORT TestGlobals : public PpapiGlobals {
  public:
   TestGlobals();
   virtual ~TestGlobals();