[Android] Native File System API
Completed features list:

Create file
Read file
Write file
Remove file
Create Directory
List Directory Entries
Remove Directory

BUG=https://crosswalk-project.org/jira/browse/XWALK-672
Bump version to 7.36.153.0
Merge branch 'master' of github.com-crosswalk:crosswalk-project/crosswalk
Merge pull request #2048 from shawngao5/native_file_system_android

[Android] Native File System API
Revert accidental change of kCSPKey value.

SSIA, the change had happened at PR #2046.
Merge pull request #2061 from pozdnyakov/revert_accidental_manifest_field_renaming

Revert accidental change of kCSPKey value.
[Tizen][Desktop] WebApp is able to access files via file:// protocol

This change allows an application to access files via file:// protocol
if its manifest contains 'csp' field and the applied policy allows
fetching from 'localhost' (e.g. "csp": "default-src file://localhost").

The application should use the URLs in the following format:
file://localhost/path/to/the/local/file

BUG=XWALK-1840