[tracing] Remove memory-infra plumbing classes for blink

content/child/web_memory_dump_provider_adapter.cc

-// 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.
-
-#include "content/child/web_memory_dump_provider_adapter.h"
-
-#include "content/child/web_process_memory_dump_impl.h"
-#include "third_party/WebKit/public/platform/WebMemoryDumpProvider.h"
-
-namespace content {
-
-WebMemoryDumpProviderAdapter::WebMemoryDumpProviderAdapter(
-    blink::WebMemoryDumpProvider* wmdp)
-    : web_memory_dump_provider_(wmdp), is_registered_(false) {
-}
-
-WebMemoryDumpProviderAdapter::~WebMemoryDumpProviderAdapter() {
-  DCHECK(!is_registered_);
-}
-
-bool WebMemoryDumpProviderAdapter::OnMemoryDump(
-    const base::trace_event::MemoryDumpArgs& args,
-    base::trace_event::ProcessMemoryDump* pmd) {
-  blink::WebMemoryDumpLevelOfDetail level;
-  switch (args.level_of_detail) {
-    case base::trace_event::MemoryDumpLevelOfDetail::LIGHT:
-      level = blink::WebMemoryDumpLevelOfDetail::Light;
-      break;
-    case base::trace_event::MemoryDumpLevelOfDetail::DETAILED:
-      level = blink::WebMemoryDumpLevelOfDetail::Detailed;
-      break;
-    default:
-      NOTREACHED();
-      return false;
-  }
-  WebProcessMemoryDumpImpl web_pmd_impl(args.level_of_detail, pmd);
-
-  return web_memory_dump_provider_->onMemoryDump(level, &web_pmd_impl);
-}
-
-}  // namespace content