Revert of Implement helper functionalities for computing image size with ES3 settings.

gpu/command_buffer/service/context_state.cc

Index: gpu/command_buffer/service/context_state.cc
diff --git a/gpu/command_buffer/service/context_state.cc b/gpu/command_buffer/service/context_state.cc
index 4cbf2941b319461244e2754112efa5fb432dcd87..b93a37295dfb7664f83236529d4aa2f299e05af7 100644
--- a/gpu/command_buffer/service/context_state.cc
+++ b/gpu/command_buffer/service/context_state.cc
@@ -594,28 +594,6 @@
   }
 }
 
-PixelStoreParams ContextState::GetPackParams() {
-  PixelStoreParams params;
-  params.alignment = pack_alignment;
-  params.row_length = pack_row_length;
-  params.skip_pixels = pack_skip_pixels;
-  params.skip_rows = pack_skip_rows;
-  return params;
-}
-
-PixelStoreParams ContextState::GetUnpackParams(Dimension dimension) {
-  PixelStoreParams params;
-  params.alignment = unpack_alignment;
-  params.row_length = unpack_row_length;
-  params.skip_pixels = unpack_skip_pixels;
-  params.skip_rows = unpack_skip_rows;
-  if (dimension == k3D) {
-    params.image_height = unpack_image_height;
-    params.skip_images = unpack_skip_images;
-  }
-  return params;
-}
-
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.