Convert //ash from scoped_ptr to std::unique_ptr

ash/tooltips/tooltip_controller_unittest.cc

Index: ash/tooltips/tooltip_controller_unittest.cc
diff --git a/ash/tooltips/tooltip_controller_unittest.cc b/ash/tooltips/tooltip_controller_unittest.cc
index 4bc4cafdde28522141645ec5c55675ab6ca0fa55..1bde140fc76c2d053ff9911f8812572205e2a70d 100644
--- a/ash/tooltips/tooltip_controller_unittest.cc
+++ b/ash/tooltips/tooltip_controller_unittest.cc
@@ -82,7 +82,7 @@ class TooltipControllerTest : public AshTestBase {
   }
 
  protected:
-  scoped_ptr<TooltipControllerTestHelper> helper_;
+  std::unique_ptr<TooltipControllerTestHelper> helper_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TooltipControllerTest);
@@ -97,7 +97,7 @@ TEST_F(TooltipControllerTest, NonNullTooltipClient) {
 }
 
 TEST_F(TooltipControllerTest, HideTooltipWhenCursorHidden) {
-  scoped_ptr<views::Widget> widget(CreateNewWidgetOn(0));
+  std::unique_ptr<views::Widget> widget(CreateNewWidgetOn(0));
   TooltipTestView* view = new TooltipTestView;
   AddViewToWidgetAndResize(widget.get(), view);
   view->set_tooltip_text(base::ASCIIToUTF16("Tooltip Text"));
@@ -132,15 +132,15 @@ TEST_F(TooltipControllerTest, TooltipsOnMultiDisplayShouldNotCrash) {
 
   UpdateDisplay("1000x600,600x400");
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
-  scoped_ptr<views::Widget> widget1(CreateNewWidgetWithBoundsOn(
-      0, gfx::Rect(10, 10, 100, 100)));
+  std::unique_ptr<views::Widget> widget1(
+      CreateNewWidgetWithBoundsOn(0, gfx::Rect(10, 10, 100, 100)));
   TooltipTestView* view1 = new TooltipTestView;
   AddViewToWidgetAndResize(widget1.get(), view1);
   view1->set_tooltip_text(base::ASCIIToUTF16("Tooltip Text for view 1"));
   EXPECT_EQ(widget1->GetNativeView()->GetRootWindow(), root_windows[0]);
 
-  scoped_ptr<views::Widget> widget2(CreateNewWidgetWithBoundsOn(
-      1, gfx::Rect(1200, 10, 100, 100)));
+  std::unique_ptr<views::Widget> widget2(
+      CreateNewWidgetWithBoundsOn(1, gfx::Rect(1200, 10, 100, 100)));
   TooltipTestView* view2 = new TooltipTestView;
   AddViewToWidgetAndResize(widget2.get(), view2);
   view2->set_tooltip_text(base::ASCIIToUTF16("Tooltip Text for view 2"));