cc: Fixup cc to not use auto to deduce a raw pointer.

cc/trees/layer_tree_host_impl_unittest.cc

Index: cc/trees/layer_tree_host_impl_unittest.cc
diff --git a/cc/trees/layer_tree_host_impl_unittest.cc b/cc/trees/layer_tree_host_impl_unittest.cc
index 558483ada0fdc7df8308c18bddca041eb9d32689..d7490591451be4f65ff44926b1b5affe80ee438f 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -3736,7 +3736,7 @@ TEST_F(LayerTreeHostImplTest, PrepareToDrawSucceedsAndFails) {
     // Clean up host_impl_ state.
     const auto& testcase = cases[i];
     std::vector<LayerImpl*> to_remove;
-    for (const auto& child : root->test_properties()->children)
+    for (auto* child : root->test_properties()->children)
       to_remove.push_back(child);
     for (auto* child : to_remove)
       root->test_properties()->RemoveChild(child);
@@ -3831,7 +3831,7 @@ TEST_F(LayerTreeHostImplTest,
   for (size_t i = 0; i < cases.size(); ++i) {
     const auto& testcase = cases[i];
     std::vector<LayerImpl*> to_remove;
-    for (const auto& child : root->test_properties()->children)
+    for (auto* child : root->test_properties()->children)
       to_remove.push_back(child);
     for (auto* child : to_remove)
       root->test_properties()->RemoveChild(child);
@@ -6876,7 +6876,7 @@ class LayerTreeHostImplViewportCoveredTest : public LayerTreeHostImplTest {
  protected:
   size_t CountGutterQuads(const QuadList& quad_list) {
     size_t num_gutter_quads = 0;
-    for (const auto& quad : quad_list) {
+    for (auto* quad : quad_list) {
       num_gutter_quads += (quad->material == gutter_quad_material_) ? 1 : 0;
     }
     return num_gutter_quads;
@@ -6889,7 +6889,7 @@ class LayerTreeHostImplViewportCoveredTest : public LayerTreeHostImplTest {
 
   // Make sure that the texture coordinates match their expectations.
   void ValidateTextureDrawQuads(const QuadList& quad_list) {
-    for (const auto& quad : quad_list) {
+    for (auto* quad : quad_list) {
       if (quad->material != DrawQuad::TEXTURE_CONTENT)
         continue;
       const TextureDrawQuad* texture_quad = TextureDrawQuad::MaterialCast(quad);