more content exports needed for unit_tests and browser_tests.

content/renderer/renderer_webkitplatformsupport_impl.h

Index: content/renderer/renderer_webkitplatformsupport_impl.h
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.h b/content/renderer/renderer_webkitplatformsupport_impl.h
index 9517693ad5b196cec21d92b0db0b03a6ad8b46b8..def554b8207de267b028571518a70e6fd208f1df 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.h
+++ b/content/renderer/renderer_webkitplatformsupport_impl.h
@@ -6,8 +6,10 @@
 #define CONTENT_RENDERER_RENDERER_WEBKITPLATFORMSUPPORT_IMPL_H_
 #pragma once
 
+#include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/platform_file.h"
+#include "content/common/content_export.h"
 #include "webkit/glue/webkitplatformsupport_impl.h"
 
 class WebSharedWorkerRepositoryImpl;
@@ -21,8 +23,8 @@ namespace webkit_glue {
 class WebClipboardImpl;
 }
 
-class RendererWebKitPlatformSupportImpl
-    : public webkit_glue::WebKitPlatformSupportImpl {
+class CONTENT_EXPORT RendererWebKitPlatformSupportImpl
+    : NON_EXPORTED_BASE(public webkit_glue::WebKitPlatformSupportImpl) {
  public:
   RendererWebKitPlatformSupportImpl();
   virtual ~RendererWebKitPlatformSupportImpl();