GPU: Buld most of the gpu as a single DLL.

gpu/command_buffer/service/id_manager.h

Index: gpu/command_buffer/service/id_manager.h
===================================================================
--- gpu/command_buffer/service/id_manager.h	(revision 124044)
+++ gpu/command_buffer/service/id_manager.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
@@ -8,6 +8,7 @@
 #include "base/basictypes.h"
 #include "base/hash_tables.h"
 #include "gpu/command_buffer/service/gl_utils.h"
+#include "gpu/gpu_export.h"
 
 namespace gpu {
 namespace gles2 {
@@ -16,7 +17,7 @@
 //
 // NOTE: To support shared resources an instance of this class will
 // need to be shared by multiple GLES2Decoders.
-class IdManager {
+class GPU_EXPORT IdManager {
  public:
   IdManager();
   ~IdManager();