Fix "line 2: BUILT_PRODUCTS_DIR: command not found"

Fix "line 2: BUILT_PRODUCTS_DIR: command not found".  <(PRODUCT_DIR) expands
to an Xcode variable, $(BUILT_PRODUCTS_DIR), which is not a shell variable.
The shell tries to treat it as a command expansion.  Use ${BUILT_PRODUCTS_DIR}
directly.

BUG=none
TEST=Nico

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=30686

[Mark Mentovai, 2009-11-02 05:48:45]

TBR

[Nico, 2009-11-02 17:23:51]

LG, thanks for the quick fix.

http://codereview.chromium.org/353002/diff/1/2
File chrome/chrome.gyp (right):

http://codereview.chromium.org/353002/diff/1/2#newcode3745
Line 3745: '<(mac_product_name) Framework.framework/Resources/theme.pak'
I prefer to explicitly use `+` in these cases at the moment, to make clear that
this is not a case of Missing-Comma-At-Line-End :-P

[tony, 2009-11-02 17:39:50]

Thanks mark, LGTM.