[Android] add setBackgroundColor implementation and ignore LAYER_TYPE_SOFTWARE in setLayerType

BUG=https://crosswalk-project.org/jira/browse/XWALK-2798
[Android] Use Uri for the web socket url for remote debugging

Class URL doesn't accept ws protocol in case openConnection is
called in future without handler.

Use Uri class instead, this is a minor change to the API
not released to customers yet. Roll up the API version to 4.1.

BUG=https://crosswalk-project.org/jira/browse/XWALK-2893
Bump version to 11.39.238.0
Merge branch 'master' of github.com-crosswalk:crosswalk-project/crosswalk
Merge pull request #2583 from wang16/embedding_api

[Android] Use Uri for the web socket url for remote debugging
Merge pull request #2559 from js0701/addbackgroundview

[Android] add setBackgroundColor implementation and ignore LAYER_TYPE_SOFTWARE
# v8_crosswalk_rev = '35e0d97482e74df63e75088eec0378f19bad24dd'
DEPS.xwalk: Roll v8-crosswalk (03d8b6c -> 35e0d97)

35e0d97 Merge pull request #59 from eleskine/master
089ec67 Extend CPU profiler with mapping ticks to source lines