cros: Fix eula height regression

Use a fixed height on webview to work around the wrong height
calculated for its inner iframe. Previously, the work around
is to set a fixed height on #eulaDialog but that has a problem
that webview height grows when it gains/loses focus.

Bug: 778978
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I6be9054566f53251afe6bf3bca2972fa1d45ab7b
Reviewed-on: https://chromium-review.googlesource.com/754296
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Commit-Queue: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#514238}
2 files changed