aura: Set up the mock compositor to get gfx_unittests green on linux.

ui/ui_unittests.gypi

Index: ui/ui_unittests.gypi
diff --git a/ui/ui_unittests.gypi b/ui/ui_unittests.gypi
index a550de25bdd11f70e244ce777e056b1d46fb1afb..91b9dfa84c57d34c783796faad13eea81d227fa4 100644
--- a/ui/ui_unittests.gypi
+++ b/ui/ui_unittests.gypi
@@ -180,6 +180,8 @@
         ['use_aura==1', {
           'dependencies': [
             'aura/aura.gyp:aura',
+            'gfx/compositor/compositor.gyp:compositor',

[jonathan.backer, 2011/10/25 20:13:53]

It's only necessary to pull in compositor if you're going to run with a real
compositor. If it's always mock, you only need the compositor_test_support.

[sadrul, 2011/10/25 20:28:42]

That's what I thought too, but without this, I get linking errors:

/usr/bin/ld:
obj/ui/gfx/compositor/compositor_test_support.a(obj/ui/gfx/compositor/compositor_test_support.layer.o):
in function
ui::Layer::SetAnimation(ui::Animation*):../../ui/gfx/compositor/layer.cc:134:
error: undefined reference to
'ui::LayerAnimationManager::LayerAnimationManager(ui::Layer*)'
/usr/bin/ld:
obj/ui/gfx/compositor/compositor_test_support.a(obj/ui/gfx/compositor/compositor_test_support.layer.o):
in function
ui::Layer::SetAnimation(ui::Animation*):../../ui/gfx/compositor/layer.cc:136:
error: undefined reference to
'ui::LayerAnimationManager::SetAnimation(ui::Animation*)'
/

etc,

+            'gfx/compositor/compositor.gyp:compositor_test_support',
           ],
         }],
       ],