Make BrowserHistoryHandlerTest a ChromeRenderViewHostTestHarness.

This simplifies the test and allows it to pass in single process mash
due to extra setup in the test fixture.

(Technically, it also passes in single process mash without this change,
but would cease to do so after AuraTestSuite stops creating an
InputDeviceClient, which will soon happen.)

Bug: 905430
Change-Id: I0f9f630fdfd68e72bae1e652bad07bc18ec39d51
Reviewed-on: https://chromium-review.googlesource.com/c/1343348
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611896}
1 file changed