Revert of Add subscribeUniform extension pipeline

gpu/command_buffer/client/gles2_implementation_autogen.h

Index: gpu/command_buffer/client/gles2_implementation_autogen.h
diff --git a/gpu/command_buffer/client/gles2_implementation_autogen.h b/gpu/command_buffer/client/gles2_implementation_autogen.h
index 3a11f10564e2bf0f00a61676e677e1144a9f9ed4..4e547d9264a15b880b906c91c75f75400ae30817 100644
--- a/gpu/command_buffer/client/gles2_implementation_autogen.h
+++ b/gpu/command_buffer/client/gles2_implementation_autogen.h
@@ -628,22 +628,6 @@
 void BindUniformLocationCHROMIUM(GLuint program,
                                  GLint location,
                                  const char* name) override;
-
-void GenValuebuffersCHROMIUM(GLsizei n, GLuint* buffers) override;
-
-void DeleteValuebuffersCHROMIUM(GLsizei n, const GLuint* valuebuffers) override;
-
-GLboolean IsValuebufferCHROMIUM(GLuint valuebuffer) override;
-
-void BindValuebufferCHROMIUM(GLenum target, GLuint valuebuffer) override;
-
-void SubscribeValueCHROMIUM(GLenum target, GLenum subscription) override;
-
-void PopulateSubscribedValuesCHROMIUM(GLenum target) override;
-
-void UniformValuebufferCHROMIUM(GLint location,
-                                GLenum target,
-                                GLenum subscription) override;
 
 void BindTexImage2DCHROMIUM(GLenum target, GLint imageId) override;