Tapping on SELECT element should not immediately reopen the same popup
Tapping on SELECT element should not immediately reopen the same popup

WebViewImpl::handleMouseDown checks if the event caused the same popup to reopen. This adds the same check for GestureTap.

BUG=540670

Review URL: https://codereview.chromium.org/1412213009

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#357295}

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