Reorder destruction of HttpNetworkRequest and HttpRequestInfo to avoid accessing
freed memory in HttpNetworkRequest's destructor.

Also added request_ access in ~MockNetworkTransaction to reproduce the issue.
HttpCache.RangeGET_ParallelValidationRestartDoneHeaders is now crashing in the asan
build without the fix

BUG=734037

Review-Url: https://codereview.chromium.org/2936423004
Cr-Commit-Position: refs/heads/master@{#480220}
3 files changed