[ScreenOrientation] De-associate device.mojom.ScreenOrientation from legacy IPC channel.

[ScreenOrientation] De-associate device.mojom.ScreenOrientation from legacy IPC channel.

This CL
  - registers device.mojom.ScreenOrientation into the interface
    registry of every render frame host, instead of using
    content::WebContentsFrameBindingSet to associate with legacy IPC
    channel before.
  - removes helpers in content/renderer/screen_orientation/, lets client
    side(blink) connect to this interface directly by itself.
  - lets blink synchronize ordering between response of LockOrientation()
    and the legacy IPC ViewMsg_Resize.

BUG=678545
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation

[leonhsl(Using Gerrit), 2017-02-19 08:01:58]

Description was changed from

==========
[ScreenOrientation] De-associate device.mojom.ScreenOrientation from legacy IPC
channel.

This CL
  - registers device.mojom.ScreenOrientation into the interface
    registry of every render frame host, instead of using
    content::WebContentsFrameBindingSet to associate with legacy IPC
    channel before.
  - removes helpers in content/renderer/screen_orientation/, lets client
    side(blink) connect to this interface directly by itself.
  - lets blink synchronize ordering between response of LockOrientation()
    and the legacy IPC ViewMsg_Resize.

BUG=678545
==========

to

==========
[ScreenOrientation] De-associate device.mojom.ScreenOrientation from legacy IPC
channel.

This CL
  - registers device.mojom.ScreenOrientation into the interface
    registry of every render frame host, instead of using
    content::WebContentsFrameBindingSet to associate with legacy IPC
    channel before.
  - removes helpers in content/renderer/screen_orientation/, lets client
    side(blink) connect to this interface directly by itself.
  - lets blink synchronize ordering between response of LockOrientation()
    and the legacy IPC ViewMsg_Resize.

BUG=678545
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation
==========

[leonhsl(Using Gerrit), 2017-02-20 09:38:39]

leon.han@intel.com changed reviewers:
+ blundell@chromium.org, mlamouri@chromium.org

[leonhsl(Using Gerrit), 2017-02-20 09:38:40]

This CL is not completed yet, some existing tests may have compilation failure
and I also want to make some new tests to confirm some subtle cases, although
now I'm still studying around layout tests..

Even though this CL can now illustrate what I want to do based on
https://codereview.chromium.org/2688383002/, to help make the whole picture
clearer.