Update WebView related modifications at once

Update WebView related modifications at once

the following is the list of squashed 5 patches

Add WebView APIs for fullscreen, text found, etc.

This reverts commit 5fd351ead589f8dd18fb03e0f41da428f9f50c8f.

Change-Id: Iaad2940efa36007e8ccf7521f1791e910adb376d

TOUCH_FOCUSABLE's default is false so this also should not be set

This reverts commit 37981e66c213fcbac975106819353d8c13e9df3a.

Change-Id: Ie4422b4efa337ce998277d1126c29560675799d8

Apply CornerRadius for webview

This reverts commit 8c5b6744ac2a2c4cecdbd9fe52823106c4afbc1e.

Change-Id: If5bb118a2726af7efa54e0f5808ed2682a6f0bee

Add a WebView API for notifying orientation change

This reverts commit e4a119f53659de1dccf8cc96fefdcd90f59d9ed6.

Change-Id: Ib87d1a379a65d4ca52cf34362fc96aaccc9cb06b

Add WebView's JavascriptMessageHandler callback

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

Change-Id: I85d323b3cead95ade36c2ee1ce8e02263a91f3e6