Remove implicit conversions from scoped_refptr to T* in cc/trees/

cc/trees/layer_tree_host_unittest_scroll.cc

 // Copyright 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 "cc/trees/layer_tree_host.h"
 
 #include "base/memory/weak_ptr.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/layers/picture_layer.h"
@@ skipping 32 matching lines @@
     scroll_layer->SetIsDrawable(true);
     scroll_layer->SetIsContainerForFixedPositionLayers(true);
     scroll_layer->SetScrollClipLayerId(root_layer->id());
     scroll_layer->SetScrollOffset(initial_scroll_);
     layer_tree_host()->RegisterViewportLayers(root_layer, scroll_layer, NULL);
     PostSetNeedsCommitToMainThread();
   }
 
   virtual void Layout() OVERRIDE {
     Layer* root = layer_tree_host()->root_layer();
-    Layer* scroll_layer = root->children()[0];
+    Layer* scroll_layer = root->children()[0].get();
     if (!layer_tree_host()->source_frame_number()) {
       EXPECT_VECTOR_EQ(initial_scroll_, scroll_layer->scroll_offset());
     } else {
       EXPECT_VECTOR_EQ(initial_scroll_ + scroll_amount_,
                        scroll_layer->scroll_offset());
 
       // Pretend like Javascript updated the scroll position itself.
       scroll_layer->SetScrollOffset(second_scroll_);
     }
   }
@@ skipping 150 matching lines @@
     root_scroll_layer->SetIsContainerForFixedPositionLayers(true);
     root_layer->AddChild(root_scroll_layer);
 
     layer_tree_host()->RegisterViewportLayers(
         root_layer, root_scroll_layer, NULL);
     layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 0.01f, 100.f);
   }
 
   virtual void WillBeginMainFrame() OVERRIDE {
     num_will_begin_main_frames_++;
-    Layer* root_scroll_layer = layer_tree_host()->root_layer()->children()[0];
+    Layer* root_scroll_layer =
+        layer_tree_host()->root_layer()->children()[0].get();
     switch (num_will_begin_main_frames_) {
       case 1:
         // This will not be aborted because of the initial prop changes.
         EXPECT_EQ(0, num_impl_scrolls_);
         EXPECT_EQ(0, layer_tree_host()->source_frame_number());
         EXPECT_VECTOR_EQ(root_scroll_layer->scroll_offset(), initial_scroll_);
         EXPECT_EQ(1.f, layer_tree_host()->page_scale_factor());
         break;
       case 2:
         // This commit will be aborted, and another commit will be
@@ skipping 531 matching lines @@
         root_layer, root_scroll_layer, NULL);
     layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 0.01f, 100.f);
   }
 
   virtual void BeginTest() OVERRIDE {
     PostSetNeedsCommitToMainThread();
   }
 
   virtual void Layout() OVERRIDE {
     Layer* root = layer_tree_host()->root_layer();
-    Layer* scroll_layer = root->children()[0];
+    Layer* scroll_layer = root->children()[0].get();
     if (!layer_tree_host()->source_frame_number()) {
       EXPECT_VECTOR_EQ(scroll_layer->scroll_offset(), initial_scroll_);
     } else {
       EXPECT_VECTOR_EQ(scroll_layer->scroll_offset(),
                        initial_scroll_ + impl_thread_scroll1_);
 
       // Pretend like Javascript updated the scroll position itself with a
       // change of main_thread_scroll.
       scroll_layer->SetScrollOffset(initial_scroll_ + main_thread_scroll_ +
                                     impl_thread_scroll1_);
@@ skipping 107 matching lines @@
         root_layer, root_scroll_layer, NULL);
     layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 0.01f, 100.f);
   }
 
   virtual void BeginTest() OVERRIDE {
     PostSetNeedsCommitToMainThread();
   }
 
   virtual void WillCommit() OVERRIDE {
     Layer* root = layer_tree_host()->root_layer();
-    Layer* scroll_layer = root->children()[0];
+    Layer* scroll_layer = root->children()[0].get();
     switch (layer_tree_host()->source_frame_number()) {
       case 0:
         EXPECT_TRUE(scroll_layer->needs_push_properties());
         break;
       case 1:
         // Even if this layer doesn't need push properties, it should
         // still pick up scrolls that happen on the active layer during
         // commit.
         EXPECT_FALSE(scroll_layer->needs_push_properties());
         break;
@@ skipping 299 matching lines @@
   RunTest(true, false, true);
 }
 
 TEST_F(LayerTreeHostScrollTestLayerStructureChange, ScrollDestroyWholeTree) {
   scroll_destroy_whole_tree_ = true;
   RunTest(true, false, true);
 }
 
 }  // namespace
 }  // namespace cc