Remove abstract classes for memory dumper

third_party/WebKit/Source/platform/WebMemoryAllocatorDump.h

-// Copyright 2015 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.
-
-#ifndef WebMemoryAllocatorDump_h
-#define WebMemoryAllocatorDump_h
-
-#include "public/platform/WebCommon.h"
-#include "public/platform/WebString.h"
-
-namespace blink {
-typedef uint64_t WebMemoryAllocatorDumpGuid;
-
-// A container which holds all the attributes of a particular dump for a given
-// allocator.
-class BLINK_PLATFORM_EXPORT WebMemoryAllocatorDump {
-public:
-    virtual ~WebMemoryAllocatorDump();
-
-    // Adds a scalar attribute to the dump.
-    // Arguments:
-    //   name: name of the attribute. Typical names, emitted by most allocators
-    //       dump providers are: "size" and "objects_count".
-    //   units: the units for the attribute. Gives a hint to the trace-viewer UI
-    //       about the semantics of the attribute.
-    //       Currently supported values are "bytes" and "objects".
-    //   value: the value of the attribute.
-    virtual void addScalar(const char* name, const char* units, uint64_t value) {}
-    virtual void addScalarF(const char* name, const char* units, double value) {}
-    virtual void addString(const char* name, const char* units, const WebString& value) {}
-
-    // |guid| is an optional global dump identifier, unique across all processes
-    // within the scope of a global dump. It is only required when using the
-    // graph APIs (see AddOwnershipEdge) to express retention / suballocation or
-    // cross process sharing. See crbug.com/492102 for design docs.
-    // Subsequent MemoryAllocatorDump(s) with the same |absolute_name| are
-    // expected to have the same guid.
-    virtual WebMemoryAllocatorDumpGuid guid() const = 0;
-};
-
-} // namespace blink
-
-#endif // WebMemoryAllocatorDump_h