Rename apps::ShellWindow to apps::AppWindow

* Rename ShellWindowRegistry
* Rename ShellWindowGeometryCache
* Rename members like shell_window_ to app_window_
* Rename locals like shell_window to app_window

BUG=343591
TEST=compiles
[email protected]
[email protected] for chrome/browser/ui/ash/launcher
[email protected] for chrome/browser/ui/cocoa
[email protected] for chrome/browser/ui/gtk
[email protected] for chrome/test

Review URL: https://codereview.chromium.org/166573005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251542 0039d316-1c4b-4281-b951-d872f2087c98
109 files changed