[Android WebView] Always visible to ContentViewCore
Keep the |visibile_| arg in InProcessViewRenderer for now since it's
only used in devtools.
For RestoreState, we used to wait until the view is visible
before loading, but now need to explicitly call Load after
restore.
Note the DCHECK in InProcessViewRenderer::DrawGL is intentionally
left there to avoid conflict with another CL. Will clean up later.
BUG=250594
NOTRY=true
Review URL: https://chromiumcodereview.appspot.com/
19540025
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@215442 0039d316-1c4b-4281-b951-d872f2087c98