PlzNavigate: Implement CommitNavigation on the renderer side
This CL implements the handler of FrameMsg_CommitNavigation in the renderer. Upon receiving this message, the renderer will create a WebURLRequest, with extra parameters in RequestExtraData. Those parameters will be used to override the url of the request and the ResourceResponse in WebURLLoaderImpl. The WebURLRequest created in RenderFrameImpl is then loaded by blink.
BUG=376091
Review URL: https://codereview.chromium.org/539113003
Cr-Commit-Position: refs/heads/master@{#298581}
12 files changed
