[Runtime] Add the check for return value of GetDEREncoded().

This patch is to add the check for return value of GetDEREncoded() in
xwalk_contents_client_bridge.cc.

CID=220017

Related to XWALK-2928
[Android] Let onCreateInputConnection to be delivered to XWalkView

onCreateInputConnection is never called if override it on XWalkView
because the one get callbacked is the descendant ContentView object
which get the focus actually but not the XWalkView object which
users holding. This patch passes this callback to the parent view
step by step and finally reaches to the XWalkView

BUG=XWALK-3024
[Android] Enable x86 64-bit support for Crosswalk

BUG=XWALK-2839
[Tizen] Add unit test for metadata configuration element handler

This patch adds tizen_metadata_handler_unittest.cc. Now test verify
that the handler properly handles the following configuration elements:
widget.metadata @key @value
Roll new ozone-wayland.

- Replace Epoll calls by Poll
Merge pull request #2729 from darktears/master

Roll new ozone-wayland.
Adding myself to the 'runtime' folder owners list
Bump version to 11.39.266.0
[Android] Fix the issue about status bar was not shown.

This patch is to fix the issue about status bar was not shown when exit
the fullscreen mode.
Add flag to avoid the second setting from video view.

BUG=XWALK-3023
Merge pull request #2732 from wuhengzhi/xwalk_3023_status_bar

[Android] Fix the issue about status bar was not shown.
Merge pull request #2730 from pozdnyakov/runtime_folder_owner

Adding myself to the 'runtime' folder owners list
[Tizen] packaging: Use the system's protobuf instead of Chromium's.

protobuf is quite resource-heavy to compile, so using a version already
installed in the system makes the build faster and also reduces our
usage of bundled Chromium libraries.

The version in src/third_party/protobuf is similar to the one in
Tizen (which was recently updated to 2.6.1): 2.5.0 plus a lot of MIPS64
and aarch64 patches that made it into the 2.6 release series.
[Tizen] Remove unused variable in tizen_metadata_handler.cc

Variable "value" of type std::string was declared but never used.
That's why it was removed. Besides it fixes some other nits.
Merge pull request #2693 from wuhengzhi/xwalk_2928_cid220017

[Runtime] Add the check for return value of GetDEREncoded().
Merge pull request #2734 from rakuco/tizen-system-protobuf

[Tizen] packaging: Use the system's protobuf instead of Chromium's.
DEPS.xwalk: Roll ozone-wayland (b002e06 -> a4ca316).

a4ca316 Make vkb work on Tizen emulator
1bc6d86 Do not uninitialize input devices when disconnecting the
        devices.

BUG=TC-1373
BUG=TC-2202
Merge pull request #2737 from rakuco/roll-oz-wl

DEPS.xwalk: Roll ozone-wayland (b002e06 -> a4ca316).
Merge pull request #2736 from piotrowskim/rm_unused_metadata_handler

[Tizen] Remove unused variable in tizen_metadata_handler.cc
Roll 40.0.2214.28

- file_util.h got moved
- OVERRIDE is not a macro anymore, we can use C++11
- PassAs<> -> Pass
- API changes in content_browser_client and in file_selecter
- Sync gyp_xwalk with gyp_chromium at rev cec083d3e7038a5b26e5fdc2e514d404890805cb
- Use ScreenOrientationDelegate instead of ScreenOrientationProvider
- Add RenderViewContextMenuImpl::Show()
- Roll Ozone Wayland ThanksGiving milestone.
Bump version to 11.39.267.0