WIP CL: https://codereview.chromium.org/2176813002/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7d55249c4cf653a3c699764e37658b4ba1e11710

commit 7d55249c4cf653a3c699764e37658b4ba1e11710
Author: msw <msw@chromium.org>
Date: Tue Jul 26 22:05:55 2016

mash: Migrate ShelfTooltipManager to wm common types.

ShelfLayoutManagerObserver -> WmShelfObserver
Use OnBeforeBubbleWidgetInit for display/container init.

Add WmWindow::Add[Remove]LimitedPreTargetHandler
(only supports that window itself, not embedded windows)

Make it a pre-target handler for the shelf WmWindow.
(as opposed to the root aura window for the display)

BUG= 629255 
TEST=Automated tests; no shelf tooltip behavior changes.
R=jamescook@chromium.org,sky@chromium.org

Review-Url: https://codereview.chromium.org/2176813002
Cr-Commit-Position: refs/heads/master@{#407927}

[modify] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/ash.gyp
[modify] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/aura/wm_window_aura.cc
[modify] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/aura/wm_window_aura.h
[modify] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/common/shelf/DEPS
[rename] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/common/shelf/shelf_tooltip_manager.cc
[rename] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/common/shelf/shelf_tooltip_manager.h
[modify] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/common/wm_window.h
[modify] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/mus/bridge/wm_window_mus.cc
[modify] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/mus/bridge/wm_window_mus.h
[modify] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/shelf/shelf_tooltip_manager_unittest.cc
[modify] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/shelf/shelf_view.h
[modify] https://crrev.com/7d55249c4cf653a3c699764e37658b4ba1e11710/ash/shelf/shelf_view_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c4638c97183ade3deead0b9a53a7c69550ca05f6

commit c4638c97183ade3deead0b9a53a7c69550ca05f6
Author: msw <msw@chromium.org>
Date: Mon Aug 01 18:08:01 2016

mash: Migrate shelf tooltip manager tests to ash/common.

Move shelf_tooltip_manager_unittest.cc to ash/common/shelf/.
Use AshTestBase::GetPrimaryShelf and WmShelf::GetShelfViewForTesting().
UseShelfView::GetAppListButton and nix ash::Shelf pointer.
Consolidate local CreateTestWidget helper function.
(AshTestBase::CreateTestWidget doesn't work here for some reason...)

BUG= 629255 
TEST=automated
R=jamescook@chromium.org

Review-Url: https://codereview.chromium.org/2196933002
Cr-Commit-Position: refs/heads/master@{#408998}

[modify] https://crrev.com/c4638c97183ade3deead0b9a53a7c69550ca05f6/ash/ash.gyp
[modify] https://crrev.com/c4638c97183ade3deead0b9a53a7c69550ca05f6/ash/common/shelf/DEPS
[rename] https://crrev.com/c4638c97183ade3deead0b9a53a7c69550ca05f6/ash/common/shelf/shelf_tooltip_manager_unittest.cc