Web Inspector: [Device Metrics] "Fit window" option inhibits adjusting the page zoom...

Web Inspector: [Device Metrics] "Fit window" option inhibits adjusting the page zoom factor
https://bugs.webkit.org/show_bug.cgi?id=90187

Reviewed by Vsevolod Vlasov.

Source/WebKit/chromium:

This change fixes the stale zoom factor, which does not get updated upon browser window resize in the "Fit window" mode.
The expected test results have little to do with actual dimensions of the test page in Chrome on a real mobile device,
since Chrome on the mobile uses a different zooming technique (pageScaleFactor-based viewport using layout width
rather than plain pageZoomFactor) and font boosting, which has not been upstreamed yet.

* src/WebDevToolsAgentImpl.cpp:
(WebKit::DeviceMetricsSupport::autoZoomPageToFitWidth):
(WebKit::DeviceMetricsSupport::ensureOriginalZoomFactor):

LayoutTests:

* inspector/styles/override-screen-size-expected.txt:
* platform/chromium/inspector/styles/device-metrics-fit-window-expected.txt:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@121556 268f45cc-cd09-0410-ab3c-d52691b4dbfc