Update WebView related modifications at once

Update WebView related modifications at once

the following is the list of squashed 7 patches

Add WebView APIs for fullscreen, text found, etc.

This reverts commit 125b2518899ea5b4573c9018b3c8198937cf43ec.

Change-Id: Ie62fd957a7acdbf13ee4055e6d8ec9392f2d93b9

Fix to enable multi touch for pinch zoom in WebView

This reverts commit 30b8b64af3d7d9371b13a033a1f43d33a38f23a9.

Change-Id: Ia1b422e7f582ab2b935ef62590e5f81795ea73fd

Support incognito mode in WebView

This reverts commit fd5e0d8babfbd95a6a7fd2454bb87e0faddd4552.

Change-Id: I7238c9549be28c4a1d9f1695ae9ec259b9970098

Fixed FeedTouchEvent

This reverts commit 62f6fb1a8206dbbb489a56c7efb8610f4a38a2c7.

Change-Id: I839f8973a6b1f5ca023acf27deaace575931edd4

Add a WebView API for notifying orientation change

This reverts commit f2bebc3266473f58c1abd8fc9808fdf7bb19ffa8.

Change-Id: I30d352fec57b8af0fe542a8be263c0ad30a5b5f6

Add WebView Certificate policy decision error get and suspend

Change-Id: Ib5cad6f1244db8e02788b9871a667fe36bd80530

Add WebView's JavascriptMessageHandler callback

- JavascriptMessageHandler callback which has two arguments of msg name and body

Change-Id: Ia2a430044375e86623664948a1e31fabff9d4155