In this patch we are trying to position the WebContents functionalities to web_contents_android
file from ContentViewCoreImpl to make it functionally readable. Ensuring there is a one-to-one
mapping between WebContents Java and native counterparts.
BUG=398263
Review URL: https://codereview.chromium.org/464393002
Cr-Commit-Position: refs/heads/master@{#289796}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289796 0039d316-1c4b-4281-b951-d872f2087c98