Add exports needed for glue to build as a component.

webkit/plugins/ppapi/ppb_image_data_impl.h

Index: webkit/plugins/ppapi/ppb_image_data_impl.h
diff --git a/webkit/plugins/ppapi/ppb_image_data_impl.h b/webkit/plugins/ppapi/ppb_image_data_impl.h
index c02b3e32f549e70ef154e76daf53d9695db37729..1c6b7ffb732c23d0758540a7bdd94f7123ca562a 100644
--- a/webkit/plugins/ppapi/ppb_image_data_impl.h
+++ b/webkit/plugins/ppapi/ppb_image_data_impl.h
@@ -12,6 +12,7 @@
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/thunk/ppb_image_data_api.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
+#include "webkit/plugins/webkit_plugins_export.h"
 
 namespace skia {
 class PlatformCanvas;
@@ -29,7 +30,7 @@ class PPB_ImageData_Impl : public ::ppapi::Resource,
   // If you call this constructor, you must also call Init before use. Normally
   // you should use the static Create function, but this constructor is needed
   // for some internal uses of ImageData (like Graphics2D).
-  explicit PPB_ImageData_Impl(PP_Instance instance);
+  WEBKIT_PLUGINS_EXPORT explicit PPB_ImageData_Impl(PP_Instance instance);
   virtual ~PPB_ImageData_Impl();
 
   static PP_Resource Create(PP_Instance pp_instance,
@@ -37,9 +38,9 @@ class PPB_ImageData_Impl : public ::ppapi::Resource,
                             const PP_Size& size,
                             PP_Bool init_to_zero);
 
-  bool Init(PP_ImageDataFormat format,
-            int width, int height,
-            bool init_to_zero);
+  WEBKIT_PLUGINS_EXPORT bool Init(PP_ImageDataFormat format,
+                                  int width, int height,
+                                  bool init_to_zero);
 
   int width() const { return width_; }
   int height() const { return height_; }