cc : Clean up cc clip tree

cc/trees/property_tree_builder.h

Index: cc/trees/property_tree_builder.h
diff --git a/cc/trees/property_tree_builder.h b/cc/trees/property_tree_builder.h
index d4b4eefab941a73a245ccdd8aa86d8f7c15cf2b5..224a1dd10cdf3cea3df0344083433ec7d5d37445 100644
--- a/cc/trees/property_tree_builder.h
+++ b/cc/trees/property_tree_builder.h
@@ -32,17 +32,18 @@ class PropertyTreeBuilder {
                      const gfx::Rect& viewport,
                      const gfx::Transform& device_transform,
                      PropertyTrees* property_trees);
-  static void BuildPropertyTrees(LayerImpl* root_layer,
-                                 const LayerImpl* page_scale_layer,
-                                 const LayerImpl* inner_viewport_scroll_layer,
-                                 const LayerImpl* outer_viewport_scroll_layer,
-                                 const LayerImpl* overscroll_elasticity_layer,
-                                 const gfx::Vector2dF& elastic_overscroll,
-                                 float page_scale_factor,
-                                 float device_scale_factor,
-                                 const gfx::Rect& viewport,
-                                 const gfx::Transform& device_transform,
-                                 PropertyTrees* property_trees);
+  static void CC_EXPORT
+  BuildPropertyTrees(LayerImpl* root_layer,
+                     const LayerImpl* page_scale_layer,
+                     const LayerImpl* inner_viewport_scroll_layer,
+                     const LayerImpl* outer_viewport_scroll_layer,
+                     const LayerImpl* overscroll_elasticity_layer,
+                     const gfx::Vector2dF& elastic_overscroll,
+                     float page_scale_factor,
+                     float device_scale_factor,
+                     const gfx::Rect& viewport,
+                     const gfx::Transform& device_transform,
+                     PropertyTrees* property_trees);
 };
 
 }  // namespace cc