Fix auto raw pointer deduction on linux

ui/compositor/layer_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/compositor/layer.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 1877 matching lines @@
 
 // Tests Layer::AddThreadedAnimation and Layer::RemoveThreadedAnimation.
 TEST_F(LayerWithRealCompositorTest, AddRemoveThreadedAnimations) {
   std::unique_ptr<Layer> root(CreateLayer(LAYER_TEXTURED));
   std::unique_ptr<Layer> l1(CreateLayer(LAYER_TEXTURED));
   std::unique_ptr<Layer> l2(CreateLayer(LAYER_TEXTURED));
 
   l1->SetAnimator(LayerAnimator::CreateImplicitAnimator());
   l2->SetAnimator(LayerAnimator::CreateImplicitAnimator());
 
-  auto player1 = l1->GetAnimator()->GetAnimationPlayerForTesting();
-  auto player2 = l2->GetAnimator()->GetAnimationPlayerForTesting();
+  auto* player1 = l1->GetAnimator()->GetAnimationPlayerForTesting();
+  auto* player2 = l2->GetAnimator()->GetAnimationPlayerForTesting();
 
   EXPECT_FALSE(player1->has_any_animation());
 
   // Trigger a threaded animation.
   l1->SetOpacity(0.5f);
 
   EXPECT_TRUE(player1->has_any_animation());
 
   // Ensure we can remove a pending threaded animation.
   l1->GetAnimator()->StopAnimating();
@@ skipping 369 matching lines @@
   layer.set_name("foo");
   std::unique_ptr<base::trace_event::ConvertableToTraceFormat> debug_info =
       layer.TakeDebugInfo(nullptr);
   std::string trace_format("bar,");
   debug_info->AppendAsTraceFormat(&trace_format);
   std::string expected("bar,{\"layer_name\":\"foo\"}");
   EXPECT_EQ(expected, trace_format);
 }
 
 }  // namespace ui