cc: Remove ScopedPtrVector and cc::remove_if.

cc/trees/layer_tree_host_unittest_damage.cc

Index: cc/trees/layer_tree_host_unittest_damage.cc
diff --git a/cc/trees/layer_tree_host_unittest_damage.cc b/cc/trees/layer_tree_host_unittest_damage.cc
index 6d2b71bee57e97fb692c352ee1a496a80946deeb..6ca11e9c51b4f9f0c000f7b40b2544a5c088de8e 100644
--- a/cc/trees/layer_tree_host_unittest_damage.cc
+++ b/cc/trees/layer_tree_host_unittest_damage.cc
@@ -410,8 +410,8 @@ class LayerTreeHostDamageTestScrollbarDoesDamage
     ++did_swaps_;
     EXPECT_TRUE(result);
     LayerImpl* root = host_impl->active_tree()->root_layer();
-    LayerImpl* scroll_clip_layer = root->children()[0];
-    LayerImpl* scroll_layer = scroll_clip_layer->children()[0];
+    LayerImpl* scroll_clip_layer = root->children()[0].get();
+    LayerImpl* scroll_layer = scroll_clip_layer->children()[0].get();
     switch (did_swaps_) {
       case 1:
         // Test that modifying the position of the content layer (not
@@ -503,8 +503,8 @@ class LayerTreeHostDamageTestScrollbarCommitDoesNoDamage
     ++did_swaps_;
     EXPECT_TRUE(result);
     LayerImpl* root = host_impl->active_tree()->root_layer();
-    LayerImpl* scroll_clip_layer = root->children()[0];
-    LayerImpl* scroll_layer = scroll_clip_layer->children()[0];
+    LayerImpl* scroll_clip_layer = root->children()[0].get();
+    LayerImpl* scroll_layer = scroll_clip_layer->children()[0].get();
     switch (did_swaps_) {
       case 1:
         // Scroll on the thread.  This should damage the scrollbar for the