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

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

Bug: 1010217
Change-Id: Ic3450e3f9b42d3ee530460f34f42e0def6b42ab9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2368572Reviewed-by: Koji Ishii <kojii@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801300}

third_party/blink/renderer/core/accessibility/ax_context.h

@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ACCESSIBILITY_AX_CONTEXT_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_ACCESSIBILITY_AX_CONTEXT_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/core_export.h"
 #include "third_party/blink/renderer/core/dom/document.h"
 #include "third_party/blink/renderer/platform/heap/persistent.h"
@@ -23,6 +22,8 @@ class CORE_EXPORT AXContext {
 
  public:
   explicit AXContext(Document& document);
+  AXContext(const AXContext&) = delete;
+  AXContext& operator=(const AXContext&) = delete;
   virtual ~AXContext();
 
   // Note: it's an error to call this after |document| is no longer active.
@@ -31,8 +32,6 @@ class CORE_EXPORT AXContext {
 
  protected:
   WeakPersistent<Document> document_;
-
-  DISALLOW_COPY_AND_ASSIGN(AXContext);
 };
 
 }  // namespace blink

third_party/blink/renderer/core/accessibility/ax_object_cache.h

@@ -29,7 +29,6 @@
 
 #include <memory>
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/accessibility/axid.h"
 #include "third_party/blink/renderer/core/accessibility/blink_ax_event_intent.h"
 #include "third_party/blink/renderer/core/core_export.h"
@@ -57,6 +56,8 @@ class CORE_EXPORT AXObjectCache : public GarbageCollected<AXObjectCache> {
 
   static AXObjectCache* Create(Document&);
 
+  AXObjectCache(const AXObjectCache&) = delete;
+  AXObjectCache& operator=(const AXObjectCache&) = delete;
   virtual ~AXObjectCache() = default;
   virtual void Trace(Visitor*) const {}
 
@@ -180,7 +181,6 @@ class CORE_EXPORT AXObjectCache : public GarbageCollected<AXObjectCache> {
   AXObjectCache() = default;
 
   static AXObjectCacheCreateFunction create_function_;
-  DISALLOW_COPY_AND_ASSIGN(AXObjectCache);
 };
 
 }  // namespace blink

third_party/blink/renderer/core/accessibility/ax_object_cache_base.h

@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ACCESSIBILITY_AX_OBJECT_CACHE_BASE_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_ACCESSIBILITY_AX_OBJECT_CACHE_BASE_H_
 
-#include "base/macros.h"
 #include "third_party/blink/renderer/core/accessibility/ax_object_cache.h"
 #include "third_party/blink/renderer/core/core_export.h"
 #include "third_party/blink/renderer/platform/wtf/casting.h"
@@ -24,6 +23,8 @@ class AXObject;
 // new public API methods or similar) and remove this class.
 class CORE_EXPORT AXObjectCacheBase : public AXObjectCache {
  public:
+  AXObjectCacheBase(const AXObjectCacheBase&) = delete;
+  AXObjectCacheBase& operator=(const AXObjectCacheBase&) = delete;
   ~AXObjectCacheBase() override = default;
 
   virtual AXObject* Get(const Node*) = 0;
@@ -31,7 +32,6 @@ class CORE_EXPORT AXObjectCacheBase : public AXObjectCache {
 
  protected:
   AXObjectCacheBase() = default;
-  DISALLOW_COPY_AND_ASSIGN(AXObjectCacheBase);
 };
 
 template <>