Revert of Upgrade PixelStorei to ES3/WebGL2.

gpu/command_buffer/service/context_state.h

Index: gpu/command_buffer/service/context_state.h
diff --git a/gpu/command_buffer/service/context_state.h b/gpu/command_buffer/service/context_state.h
index 71bb8a560645dd7a980bac14e710c16199db8669..f9d4ff7b1929f1c2cce2a15757558e0375c4793f 100644
--- a/gpu/command_buffer/service/context_state.h
+++ b/gpu/command_buffer/service/context_state.h
@@ -266,13 +266,6 @@
  private:
   void EnableDisable(GLenum pname, bool enable) const;
 
-  // If a buffer object is bound to PIXEL_PACK_BUFFER, set all pack parameters
-  // user values; otherwise, set them to 0.
-  void UpdatePackParameters() const;
-  // If a buffer object is bound to PIXEL_UNPACK_BUFFER, set all unpack
-  // parameters user values; otherwise, set them to 0.
-  void UpdateUnpackParameters() const;
-
   FeatureInfo* feature_info_;
   scoped_ptr<ErrorState> error_state_;
 };