cc: Remove ScopedPtrVector and cc::remove_if.

cc/layers/layer_position_constraint_unittest.cc

Index: cc/layers/layer_position_constraint_unittest.cc
diff --git a/cc/layers/layer_position_constraint_unittest.cc b/cc/layers/layer_position_constraint_unittest.cc
index 1162d657854d0821f203357a823a37fa6930d0c5..390698799b7ba89171c44465cdf1ec4c63b1d7f5 100644
--- a/cc/layers/layer_position_constraint_unittest.cc
+++ b/cc/layers/layer_position_constraint_unittest.cc
@@ -155,14 +155,16 @@ class LayerPositionConstraintTest : public testing::Test {
       grand_child_impl_->SetScrollDelta(gfx::Vector2dF());
     }
     root_impl_ = layer_tree_host_->CommitAndCreateLayerImplTree();
-    inner_viewport_container_layer_impl_ = root_impl_->children()[0];
-    scroll_layer_impl_ = inner_viewport_container_layer_impl_->children()[0];
-    outer_viewport_container_layer_impl_ = scroll_layer_impl_->children()[0];
+    inner_viewport_container_layer_impl_ = root_impl_->children()[0].get();
+    scroll_layer_impl_ =
+        inner_viewport_container_layer_impl_->children()[0].get();
+    outer_viewport_container_layer_impl_ =
+        scroll_layer_impl_->children()[0].get();
     child_transform_layer_impl_ =
-        outer_viewport_container_layer_impl_->children()[0];
-    child_impl_ = child_transform_layer_impl_->children()[0];
-    grand_child_impl_ = child_impl_->children()[0];
-    great_grand_child_impl_ = grand_child_impl_->children()[0];
+        outer_viewport_container_layer_impl_->children()[0].get();
+    child_impl_ = child_transform_layer_impl_->children()[0].get();
+    grand_child_impl_ = child_impl_->children()[0].get();
+    great_grand_child_impl_ = grand_child_impl_->children()[0].get();
   }
 
  protected:
@@ -564,7 +566,8 @@ TEST_F(LayerPositionConstraintTest,
   fixed_position_child->SetTransform(rotation_about_z);
 
   CommitAndUpdateImplPointers();
-  LayerImpl* fixed_position_child_impl = great_grand_child_impl_->children()[0];
+  LayerImpl* fixed_position_child_impl =
+      great_grand_child_impl_->children()[0].get();
 
   // Case 1: scroll delta of 0, 0
   child_impl_->SetScrollDelta(gfx::Vector2d(0, 0));
@@ -660,7 +663,7 @@ TEST_F(LayerPositionConstraintTest,
   // Case 4: Bottom-right fixed-position layer.
   fixed_position_child->SetPositionConstraint(fixed_to_bottom_right_);
   CommitAndUpdateImplPointers();
-  fixed_position_child_impl = great_grand_child_impl_->children()[0];
+  fixed_position_child_impl = great_grand_child_impl_->children()[0].get();
   child_impl_->SetScrollDelta(gfx::Vector2d(10, 30));
   SetFixedContainerSizeDelta(child_impl_, gfx::Vector2d(20, 20));
   ExecuteCalculateDrawProperties(root_impl_);
@@ -721,7 +724,8 @@ TEST_F(
   fixed_position_child->SetTransform(rotation_about_z);
 
   CommitAndUpdateImplPointers();
-  LayerImpl* fixed_position_child_impl = great_grand_child_impl_->children()[0];
+  LayerImpl* fixed_position_child_impl =
+      great_grand_child_impl_->children()[0].get();
 
   // Case 1: scroll delta of 0, 0
   child_impl_->SetScrollDelta(gfx::Vector2d(0, 0));
@@ -1040,7 +1044,7 @@ TEST_F(LayerPositionConstraintTest,
   LayerImpl* container1 = child_impl_;
   LayerImpl* fixed_to_container1 = grand_child_impl_;
   LayerImpl* container2 = great_grand_child_impl_;
-  LayerImpl* fixed_to_container2 = container2->children()[0];
+  LayerImpl* fixed_to_container2 = container2->children()[0].get();
 
   container1->SetScrollDelta(gfx::Vector2d(0, 15));
   container1->SetDrawsContent(true);