GitLab

This enables
testExitFullscreenEndsIfAppInvokesCallbackFromOnHideCustomView. This
test flaked because DOMUtils was unreliable for clicking links. This CL
swaps out DOMUtils for EvaluateJavaScriptWithUserGesture (since the
relevant blink code requires user gesture and has no way to turn it off
for testing).

This plumbs EvaluateJavaScriptWithUserGesture to Java in a testonly
target, so the Java method will not be present in production (and so
this change should have no security implications).

R=boliu@chromium.org

    --repeat=1000 \
    --gtest_filter=AwContentsClientFullScreenTest#testExitFullscreenEndsIfAppInvokesCallbackFromOnHideCustomView

Bug: 789306
Test: run_webview_instrumentation_test_apk --break-on-failure \
Change-Id: I4407ce0daa399fbb289d4c9d74e3d9b64bccfcbf
Reviewed-on: https://chromium-review.googlesource.com/c/1286031Reviewed-by: Bo <boliu@chromium.org>
Commit-Queue: Nate Fischer <ntfschr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600579}