Surfaceless OutputSurface implementation.

cc/test/test_web_graphics_context_3d.h

Index: cc/test/test_web_graphics_context_3d.h
diff --git a/cc/test/test_web_graphics_context_3d.h b/cc/test/test_web_graphics_context_3d.h
index e33c07a196055874bd3efaca151b900db541db0e..7214d9d62d9bffce75f5794b80ef0ebe662562a6 100644
--- a/cc/test/test_web_graphics_context_3d.h
+++ b/cc/test/test_web_graphics_context_3d.h
@@ -73,6 +73,19 @@ class TestWebGraphicsContext3D {
                                           const void* pixels) {}
   virtual void waitAsyncTexImage2DCHROMIUM(GLenum target) {}
   virtual void releaseTexImage2DCHROMIUM(GLenum target, GLint image_id) {}
+  virtual void framebufferRenderbuffer(GLenum target,
+                                       GLenum attachment,
+                                       GLenum renderbuffertarget,
+                                       GLuint renderbuffer) {}
+  virtual void framebufferTexture2D(GLenum target,
+                                    GLenum attachment,
+                                    GLenum textarget,
+                                    GLuint texture,
+                                    GLint level) {}
+  virtual void renderbufferStorage(GLenum target,
+                                   GLenum internalformat,
+                                   GLsizei width,
+                                   GLsizei height) {}
 
   virtual GLenum checkFramebufferStatus(GLenum target);