The field naming gas_price and gas_used is confusing

[telezhnaya]

I've audited the data around non-constant gas_price in the system.

block.gas_price should be actually gas_price_for_next_block
https://github.com/near/nearcore/blob/master/core/primitives/src/views.rs#L470

chunk.gas_used should be called gas_used_at_previous_chunk
https://github.com/near/nearcore/blob/master/core/primitives/src/views.rs#L729

See the details here near/near-analytics#19 (comment)

Another confusing field is receipt.gas_price
https://github.com/near/nearcore/blob/master/core/primitives/src/views.rs#L1379
As I understand, it's the value of how much gas will be blocked for this receipt until we finish processing the whole transaction. It's not equal to any of block.gas_price in the corresponding area. Moreover, in the final computations, we will not use receipt.gas_price, we will take the price from block.gas_price. So, I guess the naming should tell the user that it's only about the sum that should be frozen.