[Android] Enable the feature for onRequestFocus.

This patch is to enable the feature for onRequestFocus().
Call onRequestFocus() in activateContents().
[Android] Add test case for onRequestFocus.

This patch is to add test case for OnRequestFocus().
[Android] Keep package path for the generated java files

It will be convenient for IDE like eclipse to debug for
those source files.
[Android] Add xwalk_app_template_apk to xwalk_app_template's dependency

xwalk_app_template_apk is to verify the correctness of xwalk_app_template
before creating the package of it.
Set the dependency although, xwalk_app_template doesn't rely on
xwalk_app_template_apk to build.
Clarify the application start URL fetching

This patch introduces a clear separation between
XPK and WGT code paths for fetching start URL.

It also removes deprecated and unneeded EntryPoints
flags from the Application class.
Merge pull request #2388 from wang16/reflection_layer

[Android] Keep package path for the generated java files
Merge pull request #2386 from wang16/template_apk

[Android] Add xwalk_app_template_apk to xwalk_app_template's dependency
DEPS.xwalk: Roll ozone-wayland(db2f419 -> 6337db8) and
chromium-crosswalk(e5698a2 -> 15a0cc4)

ozone-wayland:
1c84c2e Introduce vaLockBuffer APIs in libva.
b87aac1 Update AUTHORS.
6337db8 Enable zero buffer copy method for wayland VDA.

chromium-crosswalk:
d85e4ed Introduce vaLockBuffer APIs in libva.
15a0cc4 Merge pull request #183 from shaochangbin/vaLockBuffer
Merge pull request #2399 from pozdnyakov/clarify_start_url_fetching

Clarify the application start URL fetching
Merge pull request #2323 from wuhengzhi/onRequestFocus_test

[Android] Enable the feature and add test case for onRequestFocus.
Merge pull request #2402 from shaochangbin/vda

DEPS.xwalk: Roll ozone-wayland(db2f419 -> 6337db8) and chromium-crosswalk(e5698a2 -> 15a0cc4)
Remove application storage from the desktop code path

Remove application storage from the desktop code path
(make it Tizen-only). The AppliactionServiceTizen object
was added to own the application storage.

This patch also encapsulates application launching within
the ApplicationService object, and contains multiple code
cleanups.