[Runtime] Fix install issue of widget applications without 'version'
attributes.

Widget application are failed to be installed without “version="xxx”
attribute in config.xml, case is same with 'name', 'description'
elements.

Root cause of this issue is Crosswalk makes WGT follow XPK manifest checking methods.

This PR is to fix above issue.

BUG=XWALK-1108
Merge pull request #1665 from shaochangbin/tags-configxml

[Runtime] Fix install issue of widget applications without 'version' attributes.
Bump version to 5.34.96.0
Merge pull request #1670 from junmin-zhu/python3

[Android] Packaging tool fail to run with python3.*.
[Runtime] Fix launch issue for widget applications that don't have
'content' element in config.xml.

Per Widget spec, the occurrences of 'content' element can be zero or one.
If there is no 'content' in config.xml, we should still be able to launch
widget application by the default 'index.html' path

BUG=XWALK-1109
Merge pull request #1667 from shaochangbin/content-src-issue

[Runtime] Fix launch issue for widget applications that don't have 'content' element in config.xml.
[Tizen Mobile] Remove AppcoreContext.

xwalk_launcher_tizen.cc directly use appcore package in shared process mode, no
matter either mobile or ivi. So this PR removes this legacy code.
Merge pull request #1677 from ds-hwang/remove_appcore

[Tizen Mobile] Remove AppcoreContext.
[Tizen] Specify and ship the proper licenses in the spec file.

Now that we do not care about Tizen 2.x support anymore, we can uncomment
out the lines in the spec file that ship and define the right licenses for
the Crosswalk package.

BUG=XWALK-229
Merge pull request #1673 from rakuco/fix-licensing-spec-files

[Tizen] Specify and ship the proper licenses in the spec file.
DEPS.xwalk: Roll chromium-crosswalk (6ed4b3f -> 15cca62).
Roll blink-crosswalk (26982f4 -> 23bf155).

Chromium
15cca62 Merge pull request #134 from wang16/pak_res_raw
cd2b81c Merge pull request #135 from xingnan/webaudio-flag-revert
8e139e6 Revert "[Android] Enable Web Audio on x86 -- part 3"
9a2002d [Android] Allow intercepter to extract paks

Blink
23bf155 Merge pull request #9 from ds-hwang/webgl_msaa
ddc7a36 [TEMP][IVI] WebGL: Turn off MSAA.
Merge pull request #1679 from ds-hwang/rollover

DEPS.xwalk: Roll chromium-crosswalk (6ed4b3f -> 15cca62).
Bump version to 5.34.97.0
[Android] Fix resId setting for internal resources failed

Previously, Field.isAccessible() is used to detect whether
the field is final. It's wrong in java reflection.
Fix it by using Modifier.isFinal(getModifers()) instead.

BUG=https://crosswalk-project.org/jira/browse/XWALK-1115
Merge pull request #1676 from wang16/fix_res_final

[Android] Fix resId setting for internal resources failed
[Android] Enable CSP support and related test.

Insert CSP content to http response header with android specific
method: AndroidStreamReaderURLRequestJob::HeadersComplete(), rather
than reuse the header created by Tizen code.

BUG=https://crosswalk-project.org/jira/browse/XWALK-1022
[Android] Package xwalk.apk as resource in xwalk_core_library

This is step 2 of getting rid of assets in xwalk_core_library.
To use paks as res/raw, the idea is to generate an xml in res/values
when creating xwalk_core_library, the xml contains a string-array
to describe all the paks will be put in res/raw.
XWalkViewDelegate will try to load the xml first, and intercept
ResourceExtractor if the resource to extract is on the list.

BUG=https://crosswalk-project.org/jira/browse/XWALK-1085
[Android] Add "--verbose" option for packaging tool.

There are so many debug messages from packaging tool, which
isn't friendly for developer. So add "--verbose" option for this,
it depends on developers to turn on or off this kind of message.
Flaky crashes of XWalkExtensionsIFrameTest tests

The problem here was due to a race condition with
XWalkExtensionServer. The XWalkExtensionServer methods
are invoked via task runner (on message loop), on the
other hand XWalkExtensionServer is deleted on message
loop, so the crashes turned up when the deferred calls
were processed after the object deletion.

Fixed now using WeakPtrs.
Merge pull request #1662 from gaochun/csp3

[Android] Enable CSP support and related test.