wm: Update namespace and header define guards.

wm: Update namespace and header define guards.

We use a "window_manager" namespace rather than "chromeos" and
use e.g. WINDOW_MANAGER_LAYOUT_MANAGER_H_ in headers.

[sky, 2009-12-21 15:44:29]

Change your #endif to match the style guide, and LGTM.

http://codereview.chromium.org/501116/diff/2001/2003
File src/platform/window_manager/atom_cache.h (right):

http://codereview.chromium.org/501116/diff/2001/2003#newcode98
src/platform/window_manager/atom_cache.h:98: #endif
Style guide says this should be:

#endif  // WINDOW_MANAGER_ATOM_CACHE_H_