cc: Change scoped_ptr<T>() to nullptr.

cc/trees/damage_tracker_unittest.cc

 // Copyright 2011 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 "cc/trees/damage_tracker.h"
 
 #include "cc/base/math_util.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/output/filter_operation.h"
 #include "cc/output/filter_operations.h"
@@ skipping 1087 matching lines @@
   //  - new location in target space: gfx::Rect(189, 205, 12, 8)
   EXPECT_EQ(gfx::Rect(6, 8).ToString(), grand_child_damage_rect.ToString());
   EXPECT_EQ(gfx::Rect(189, 200, 17, 13).ToString(),
             child_damage_rect.ToString());
   EXPECT_EQ(gfx::Rect(289, 300, 17, 13).ToString(),
             root_damage_rect.ToString());
 
   // CASE 3: removing the reflection should cause the entire region including
   //         reflection to damage the target surface.
   ClearDamageForAllSurfaces(root.get());
-  grand_child1->SetReplicaLayer(scoped_ptr<LayerImpl>());
+  grand_child1->SetReplicaLayer(nullptr);
   EmulateDrawingOneFrame(root.get());
   ASSERT_EQ(old_content_rect.width(),
             child1->render_surface()->content_rect().width());
   ASSERT_EQ(old_content_rect.height(),
             child1->render_surface()->content_rect().height());
 
   EXPECT_FALSE(grand_child1->render_surface());
   child_damage_rect =
           child1->render_surface()->damage_tracker()->current_damage_rect();
   root_damage_rect =
@@ skipping 76 matching lines @@
   // Advance one frame without damage so that we know the damage rect is not
   // leftover from the previous case.
   ClearDamageForAllSurfaces(root.get());
   EmulateDrawingOneFrame(root.get());
   child_damage_rect =
           child->render_surface()->damage_tracker()->current_damage_rect();
   EXPECT_TRUE(child_damage_rect.IsEmpty());
 
   // Then test mask removal.
   ClearDamageForAllSurfaces(root.get());
-  child->SetMaskLayer(scoped_ptr<LayerImpl>());
+  child->SetMaskLayer(nullptr);
   ASSERT_TRUE(child->LayerPropertyChanged());
   EmulateDrawingOneFrame(root.get());
 
   // Sanity check that a render surface still exists.
   ASSERT_TRUE(child->render_surface());
 
   child_damage_rect =
           child->render_surface()->damage_tracker()->current_damage_rect();
   EXPECT_EQ(gfx::Rect(30, 30).ToString(), child_damage_rect.ToString());
 }
@@ skipping 47 matching lines @@
   gfx::Rect child_damage_rect =
       child1->render_surface()->damage_tracker()->current_damage_rect();
 
   EXPECT_TRUE(grand_child_damage_rect.IsEmpty());
   EXPECT_EQ(gfx::Rect(194, 200, 6, 8).ToString(), child_damage_rect.ToString());
 
   // CASE 2: removing the replica mask damages only the reflected region on the
   //         target surface.
   //
   ClearDamageForAllSurfaces(root.get());
-  grand_child1_replica->SetMaskLayer(scoped_ptr<LayerImpl>());
+  grand_child1_replica->SetMaskLayer(nullptr);
   EmulateDrawingOneFrame(root.get());
 
   grand_child_damage_rect =
           grand_child1->render_surface()->damage_tracker()->
               current_damage_rect();
   child_damage_rect =
           child1->render_surface()->damage_tracker()->current_damage_rect();
 
   EXPECT_TRUE(grand_child_damage_rect.IsEmpty());
   EXPECT_EQ(gfx::Rect(194, 200, 6, 8).ToString(), child_damage_rect.ToString());
@@ skipping 178 matching lines @@
     gfx::Rect root_damage_rect =
         root->render_surface()->damage_tracker()->current_damage_rect();
     gfx::Rect damage_we_care_about = gfx::Rect(i, i);
     EXPECT_LE(damage_we_care_about.right(), root_damage_rect.right());
     EXPECT_LE(damage_we_care_about.bottom(), root_damage_rect.bottom());
   }
 }
 
 }  // namespace
 }  // namespace cc