Rename StackingClient -> WindowTreeClient

Remove SetDefaultParentForRootWindow from Window, and replace with new utility function ParentWindowForContext in window_tree_client.h
This is part of my current campaign to slim down the aura Window types. I will eventually move WindowTreeClient to a new ui/wm component that I plan to create.

R=erg@chromium.org
http://crbug.com/308844

Review URL: https://codereview.chromium.org/36473003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230501 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230501
Remove final RenderWidgetHostImpl dependency from OverscrollController

Shift the view bounds calculation from the RWHI to the
OverscrollControllerDelegate. This allows more flexibility both in testing
and the location of OverscrollController ownership.

BUG=306194

Review URL: https://codereview.chromium.org/30683003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230502 0039d316-1c4b-4281-b951-d872f2087c98
Roll gyp 1765:1768.

1766: Honor LDFLAGS on Mac and Win.
1767: Fix support for Visual Studio 2010 Express projects.
1768: [ninja/mac] Add xcode_emulation support for -Wobjc-missing-property-synthesis.

BUG=none

Review URL: https://codereview.chromium.org/35893013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230503 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230504 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230503
SVN changes up to revision 230504