Add window manager component.

content/common/gpu/client/gl_helper.h

Index: content/common/gpu/client/gl_helper.h
diff --git a/content/common/gpu/client/gl_helper.h b/content/common/gpu/client/gl_helper.h
index 40e25ebe716b955c99507f0e373fa02d24ea7a61..171a27fe3cb3723dd1aebfcae761cc5cb28aa6da 100644
--- a/content/common/gpu/client/gl_helper.h
+++ b/content/common/gpu/client/gl_helper.h
@@ -9,6 +9,7 @@
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
 
 namespace gfx {
@@ -22,7 +23,7 @@ namespace content {
 
 // Provides higher level operations on top of the WebKit::WebGraphicsContext3D
 // interfaces.
-class GLHelper {
+class CONTENT_EXPORT GLHelper {
  public:
   GLHelper(WebKit::WebGraphicsContext3D* context,
            WebKit::WebGraphicsContext3D* context_for_thread);