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GetWebViewsInfo returns a Status so its value should be checked during
WaitForDevToolsAndCheckVersion and propagated to the client in case of
failure.

Also attempting to improve reliability by always trying GetWebViewsInfo
at least once, even if the deadline is reached. It is possible for the
call to DevToolsHttpClient::Init to exceed the deadline but return an
OK status. If this happens, we currently return an error even though
GetWebViewsInfo would likely succeed as well.

Bug: 951876
Change-Id: I1623919b22a07f5e4d5b9ea3141e18e6b07d9935
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1851912Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: Brandon Walderman <brwalder@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#704672}