Replace DISALLOW_COPY_AND_ASSIGN with =delete in blink/../scroll

Explicitly remove the copy constructor and assignment operator with
the delete keyword.

Bug: 1010217
Change-Id: I209ebbcb89a616c91284c170ef251bbb4fd3091e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2371382Reviewed-by: Koji Ishii <kojii@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801293}

third_party/blink/renderer/core/scroll/programmatic_scroll_animator.h

@@ -25,10 +25,11 @@ class CompositorScrollOffsetAnimationCurve;
 // ScrollAnimatorMac.
 
 class ProgrammaticScrollAnimator : public ScrollAnimatorCompositorCoordinator {
-  DISALLOW_COPY_AND_ASSIGN(ProgrammaticScrollAnimator);
-
  public:
   explicit ProgrammaticScrollAnimator(ScrollableArea*);
+  ProgrammaticScrollAnimator(const ProgrammaticScrollAnimator&) = delete;
+  ProgrammaticScrollAnimator& operator=(const ProgrammaticScrollAnimator&) =
+      delete;
   ~ProgrammaticScrollAnimator() override;
 
   void ScrollToOffsetWithoutAnimation(const ScrollOffset&,

third_party/blink/renderer/core/scroll/scroll_animator_compositor_coordinator.h

@@ -34,7 +34,6 @@ class CORE_EXPORT ScrollAnimatorCompositorCoordinator
     : public GarbageCollected<ScrollAnimatorCompositorCoordinator>,
       private CompositorAnimationClient,
       CompositorAnimationDelegate {
-  DISALLOW_COPY_AND_ASSIGN(ScrollAnimatorCompositorCoordinator);
   USING_PRE_FINALIZER(ScrollAnimatorCompositorCoordinator, Dispose);
 
  public:
@@ -82,6 +81,10 @@ class CORE_EXPORT ScrollAnimatorCompositorCoordinator
     kRunningOnCompositorButNeedsAdjustment,
   };
 
+  ScrollAnimatorCompositorCoordinator(
+      const ScrollAnimatorCompositorCoordinator&) = delete;
+  ScrollAnimatorCompositorCoordinator& operator=(
+      const ScrollAnimatorCompositorCoordinator&) = delete;
   ~ScrollAnimatorCompositorCoordinator() override;
 
   bool HasAnimationThatRequiresService() const;

third_party/blink/renderer/core/scroll/scrollable_area.h

@@ -74,12 +74,14 @@ enum IncludeScrollbarsInRect {
 };
 
 class CORE_EXPORT ScrollableArea : public GarbageCollectedMixin {
-  DISALLOW_COPY_AND_ASSIGN(ScrollableArea);
   USING_PRE_FINALIZER(ScrollableArea, Dispose);
 
  public:
   using ScrollCallback = base::OnceClosure;
 
+  ScrollableArea(const ScrollableArea&) = delete;
+  ScrollableArea& operator=(const ScrollableArea&) = delete;
+
   static int PixelsPerLineStep(LocalFrame*);
   static float MinFractionToStepWhenPaging();
   int MaxOverlapBetweenPages() const;

third_party/blink/renderer/core/scroll/scrollbar_layer_delegate.h

@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SCROLL_SCROLLBAR_LAYER_DELEGATE_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_SCROLL_SCROLLBAR_LAYER_DELEGATE_H_
 
-#include "base/macros.h"
 #include "cc/input/scrollbar.h"
 #include "third_party/blink/renderer/core/core_export.h"
 #include "third_party/blink/renderer/platform/heap/persistent.h"
@@ -20,6 +19,8 @@ class CORE_EXPORT ScrollbarLayerDelegate : public cc::Scrollbar {
  public:
   ScrollbarLayerDelegate(blink::Scrollbar& scrollbar,
                          float device_scale_factor);
+  ScrollbarLayerDelegate(const ScrollbarLayerDelegate&) = delete;
+  ScrollbarLayerDelegate& operator=(const ScrollbarLayerDelegate&) = delete;
 
   // cc::Scrollbar implementation.
   bool IsSame(const cc::Scrollbar& other) const override;
@@ -55,8 +56,6 @@ class CORE_EXPORT ScrollbarLayerDelegate : public cc::Scrollbar {
 
   Persistent<blink::Scrollbar> scrollbar_;
   float device_scale_factor_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScrollbarLayerDelegate);
 };
 
 }  // namespace blink

third_party/blink/renderer/core/scroll/scrollbar_theme.h

@@ -39,11 +39,12 @@ class GraphicsContext;
 class WebMouseEvent;
 
 class CORE_EXPORT ScrollbarTheme {
-  DISALLOW_COPY_AND_ASSIGN(ScrollbarTheme);
   USING_FAST_MALLOC(ScrollbarTheme);
 
  public:
   ScrollbarTheme() = default;
+  ScrollbarTheme(const ScrollbarTheme&) = delete;
+  ScrollbarTheme& operator=(const ScrollbarTheme&) = delete;
   virtual ~ScrollbarTheme() = default;
 
   // If true, then scrollbars with this theme will be painted every time