* set more appropriate default for ticker symbol when wallet_addEthereumChain is called
* throw error to dapp when site suggests network with same chainId but different ticker symbol from already added network, instead of showing error and disabled notification to user
This reverts commit f09ab88891, reversing
changes made to effc761e0e.
This is being temporarily reverted to make it easier to release an
urgent fix for v10.15.1.
* add function to check if url is localhost
* allow localhost rpcUrls in `wallet_addEthereumChain`
* allow localhost blockExplorerUrls
* wrap new URL in try/catch
* add function to check if url is localhost
* allow localhost rpcUrls in `wallet_addEthereumChain`
* allow localhost blockExplorerUrls
* wrap new URL in try/catch
Adds a property, `hookNames`, to each RPC method handler export in `app/scripts/lib/rpc-method-middleware` and a function, `selectHooks`, to select from them.
`createMethodMiddleware` receives a giant `opts` object that includes a bunch of different methods from `MetaMaskController` and its subcontrollers. Each method implementation only requires a subset of these methods to do its work. Because they need some kind of name, we call these methods "hooks". With this change, whenever an RPC method is called, `selectHooks` will be called to ensure that each method only receives the hooks that it needs in order to do its job.
This implementation is based on [work in `snaps-skunkworks`](https://github.com/MetaMask/snaps-skunkworks/blob/a3e1248/packages/rpc-methods/src/utils.ts#L17-L34) that will be merged in the near future.