Part 3 of cc/ directory shuffles: animation

cc/cc.gyp

Index: cc/cc.gyp
diff --git a/cc/cc.gyp b/cc/cc.gyp
index fb27f4915e6e1590df2cfa57b7c36b5ee3a6fd57..730ce4401ed9c49d96d2df55c78b578b6a17d18b 100644
--- a/cc/cc.gyp
+++ b/cc/cc.gyp
@@ -5,15 +5,15 @@
 {
   'variables': {
     'cc_source_files': [
-      'animation.cc',
-      'animation.h',
-      'animation_curve.cc',
-      'animation_curve.h',
-      'animation_events.h',
-      'animation_id_provider.cc',
-      'animation_id_provider.h',
-      'animation_registrar.cc',
-      'animation_registrar.h',
+      'animation/animation.cc',
+      'animation/animation.h',
+      'animation/animation_curve.cc',
+      'animation/animation_curve.h',
+      'animation/animation_events.h',
+      'animation/animation_id_provider.cc',
+      'animation/animation_id_provider.h',
+      'animation/animation_registrar.cc',
+      'animation/animation_registrar.h',
       'append_quads_data.h',
       'bitmap_content_layer_updater.cc',
       'bitmap_content_layer_updater.h',
@@ -92,15 +92,15 @@
       'io_surface_layer.h',
       'io_surface_layer_impl.cc',
       'io_surface_layer_impl.h',
-      'keyframed_animation_curve.cc',
-      'keyframed_animation_curve.h',
+      'animation/keyframed_animation_curve.cc',
+      'animation/keyframed_animation_curve.h',
       'latency_info.h',
       'layer.cc',
       'layer.h',
-      'layer_animation_controller.cc',
-      'layer_animation_controller.h',
-      'layer_animation_event_observer.h',
-      'layer_animation_value_observer.h',
+      'animation/layer_animation_controller.cc',
+      'animation/layer_animation_controller.h',
+      'animation/layer_animation_event_observer.h',
+      'animation/layer_animation_value_observer.h',
       'layer_impl.cc',
       'layer_impl.h',
       'layer_iterator.cc',
@@ -236,9 +236,9 @@
       'base/scoped_ptr_vector.h',
       'scoped_resource.cc',
       'scoped_resource.h',
-      'scrollbar_animation_controller.h',
-      'scrollbar_animation_controller_linear_fade.cc',
-      'scrollbar_animation_controller_linear_fade.h',
+      'animation/scrollbar_animation_controller.h',
+      'animation/scrollbar_animation_controller_linear_fade.cc',
+      'animation/scrollbar_animation_controller_linear_fade.h',
       'scrollbar_geometry_fixed_thumb.cc',
       'scrollbar_geometry_fixed_thumb.h',
       'scrollbar_geometry_stub.cc',