Eliminate WebGlobalObjectReusePolicy from WebLocalFrameClient

This change removes the WebGlobalObjectReusePolicy parameter from
WebLocalFrameClient::DidCommitProvisionalLoad(). RenderFrameImpl now
checks the validity of the blink handle instead.

Bug: 718652
Change-Id: Ifa535c873699d72a2b38c569e16b62514f19a0eb
Reviewed-on: https://chromium-review.googlesource.com/c/1401048
Commit-Queue: Oksana Zhuravlova <oksamyt@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#623802}
6 files changed