Upgrade Tex{Sub}Image{2|3}D to handle ES3 unpack parameters.

gpu/command_buffer/service/feature_info.cc

Index: gpu/command_buffer/service/feature_info.cc
diff --git a/gpu/command_buffer/service/feature_info.cc b/gpu/command_buffer/service/feature_info.cc
index 73fb0eab56f3fa92067fc43f413084c80d019646..e0005e7ceb99465f6b96303834336b44da38cd32 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -388,10 +388,9 @@ void FeatureInfo::InitializeFeatures() {
   // Pre es3, there are no PBOS and all unpack state is handled in client side.
   // With es3, unpack state is needed in server side. We always mark these
   // enums as valid and pass them to drivers only when a valid PBO is bound.
+  // UNPACK_ROW_LENGTH, UNPACK_SKIP_ROWS, and UNPACK_SKIP_PIXELS are enabled,
+  // but there is no need to add them to pixel_store validtor.
   AddExtensionString("GL_EXT_unpack_subimage");
-  validators_.pixel_store.AddValue(GL_UNPACK_ROW_LENGTH);
-  validators_.pixel_store.AddValue(GL_UNPACK_SKIP_ROWS);
-  validators_.pixel_store.AddValue(GL_UNPACK_SKIP_PIXELS);
 
   if (feature_flags_.enable_subscribe_uniform) {
     AddExtensionString("GL_CHROMIUM_subscribe_uniform");