Add tests to ensure no RFH/RVH objects leak on cross-process navigation

Add tests to ensure no RFH/RVH objects leak on cross-process navigation

These tests were written as part of https://codereview.chromium.org/1150793002/
which failed on Win8 Aura. Splitting only the test into a separate CL
so it can be committed independently.

BUG=357747
Committed: https://crrev.com/30663b189dafe37e6dd94f73a1d88d9efe8fe787
Cr-Commit-Position: refs/heads/master@{#331138}

[nasko, 2015-05-22 15:39:21]

nasko@chromium.org changed reviewers:
+ creis@chromium.org

[nasko, 2015-05-22 15:39:22]

Hey Charlie,
The ref-counting CL (https://codereview.chromium.org/1150793002/) was reverted
due to the leak detection tests failing on Windows 8 bots. This CL splits out
the test cases so they can land separately, since they are valid even without
the rest of the changes.
Once those land, I'll get another CL to attempt another land of the
ref-counting, trying to see if I can repro in the meantime.
Thanks in advance!
Nasko

[Charlie Reis, 2015-05-22 17:28:11]

LGTM

[nasko, 2015-05-22 17:28:28]

The CQ bit was checked by nasko@chromium.org

[commit-bot: I haz the power, 2015-05-22 17:28:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1145073004/20001

[commit-bot: I haz the power, 2015-05-22 17:44:33]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-22 17:45:31]

Patchset 2 (id:??) landed as
https://crrev.com/30663b189dafe37e6dd94f73a1d88d9efe8fe787
Cr-Commit-Position: refs/heads/master@{#331138}

[Steven Holte, 2015-05-22 20:02:39]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/1149883003/ by holte@chromium.org.

The reason for reverting is: Still causes failures, on both Mac and Win8 Aura

https://build.chromium.org/p/chromium.mac/builders/Mac10.9%20Tests/builds/216....