RefCounted types should not have public destructors, Linux fixes

gpu/command_buffer/service/gl_surface_mock.h

Index: gpu/command_buffer/service/gl_surface_mock.h
diff --git a/gpu/command_buffer/service/gl_surface_mock.h b/gpu/command_buffer/service/gl_surface_mock.h
index 791e94629ebe0dde33185f6fb7c35969c63f53b6..f3ab342cc0f194d14e6b6523f88e820b021ff75c 100644
--- a/gpu/command_buffer/service/gl_surface_mock.h
+++ b/gpu/command_buffer/service/gl_surface_mock.h
@@ -14,7 +14,6 @@ namespace gpu {
 class GLSurfaceMock : public gfx::GLSurface {
  public:
   GLSurfaceMock();
-  virtual ~GLSurfaceMock();
 
   MOCK_METHOD0(Initialize, bool());
   MOCK_METHOD0(Destroy, void());
@@ -34,6 +33,9 @@ class GLSurfaceMock : public gfx::GLSurface {
   MOCK_METHOD0(GetConfig, void*());
   MOCK_METHOD0(GetFormat, unsigned());
 
+ protected:
+  virtual ~GLSurfaceMock();
+
  private:
   DISALLOW_COPY_AND_ASSIGN(GLSurfaceMock);
 };