Base: A few more files using BASE_API (for base.dll)

base/message_loop.h

Index: base/message_loop.h
===================================================================
--- base/message_loop.h	(revision 79303)
+++ base/message_loop.h	(working copy)
@@ -9,6 +9,7 @@
 #include <queue>
 #include <string>
 
+#include "base/base_api.h"
 #include "base/basictypes.h"
 #include "base/message_pump.h"
 #include "base/observer_list.h"
@@ -65,7 +66,7 @@
 // Please be SURE your task is reentrant (nestable) and all global variables
 // are stable and accessible before calling SetNestableTasksAllowed(true).
 //
-class MessageLoop : public base::MessagePump::Delegate {
+class BASE_API MessageLoop : public base::MessagePump::Delegate {
  public:
 #if defined(OS_WIN)
   typedef base::MessagePumpWin::Dispatcher Dispatcher;
@@ -117,7 +118,7 @@
   // NOTE: Any tasks posted to the MessageLoop during this notification will
   // not be run.  Instead, they will be deleted.
   //
-  class DestructionObserver {
+  class BASE_API DestructionObserver {
    public:
     virtual void WillDestroyCurrentMessageLoop() = 0;
 
@@ -283,7 +284,7 @@
   // MessageLoop.
   //
   // NOTE: A TaskObserver implementation should be extremely fast!
-  class TaskObserver {
+  class BASE_API TaskObserver {
    public:
     TaskObserver();
 
@@ -496,6 +497,7 @@
 
   ObserverList<TaskObserver> task_observers_;
 
+ private:
   DISALLOW_COPY_AND_ASSIGN(MessageLoop);
 };
 
@@ -506,7 +508,7 @@
 // This class is typically used like so:
 //   MessageLoopForUI::current()->...call some method...
 //
-class MessageLoopForUI : public MessageLoop {
+class BASE_API MessageLoopForUI : public MessageLoop {
  public:
   MessageLoopForUI() : MessageLoop(TYPE_UI) {
   }
@@ -562,7 +564,7 @@
 // This class is typically used like so:
 //   MessageLoopForIO::current()->...call some method...
 //
-class MessageLoopForIO : public MessageLoop {
+class BASE_API MessageLoopForIO : public MessageLoop {
  public:
 #if defined(OS_WIN)
   typedef base::MessagePumpForIO::IOHandler IOHandler;