predictors: move ResourcePrefetcher handling to LoadingPredictor.

chrome/browser/predictors/resource_prefetcher_manager.cc

Index: chrome/browser/predictors/resource_prefetcher_manager.cc
diff --git a/chrome/browser/predictors/resource_prefetcher_manager.cc b/chrome/browser/predictors/resource_prefetcher_manager.cc
deleted file mode 100644
index aad28a3d06d8bf50e8dedef07c83fe7150f7ab92..0000000000000000000000000000000000000000
--- a/chrome/browser/predictors/resource_prefetcher_manager.cc
+++ /dev/null
@@ -1,105 +0,0 @@
-// Copyright 2014 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 "chrome/browser/predictors/resource_prefetcher_manager.h"
-
-#include <utility>
-
-#include "base/bind.h"
-#include "base/memory/ptr_util.h"
-#include "base/stl_util.h"
-#include "chrome/browser/predictors/resource_prefetch_predictor.h"
-#include "content/public/browser/browser_thread.h"
-#include "net/url_request/url_request.h"
-#include "net/url_request/url_request_context_getter.h"
-
-using content::BrowserThread;
-
-namespace predictors {
-
-ResourcePrefetcherManager::ResourcePrefetcherManager(
-    ResourcePrefetchPredictor* predictor,
-    const LoadingPredictorConfig& config,
-    net::URLRequestContextGetter* context_getter)
-    : predictor_(predictor), config_(config), context_getter_(context_getter) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  CHECK(predictor_);
-  CHECK(context_getter_);
-}
-
-ResourcePrefetcherManager::~ResourcePrefetcherManager() {
-  DCHECK(prefetcher_map_.empty())
-      << "Did not call ShutdownOnUIThread or ShutdownOnIOThread. "
-         " Will leak Prefetcher pointers.";
-}
-
-void ResourcePrefetcherManager::ShutdownOnUIThread() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-
-  predictor_ = NULL;
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      base::BindOnce(&ResourcePrefetcherManager::ShutdownOnIOThread, this));
-}
-
-void ResourcePrefetcherManager::ShutdownOnIOThread() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
-  prefetcher_map_.clear();
-}
-
-void ResourcePrefetcherManager::MaybeAddPrefetch(
-    const GURL& main_frame_url,
-    const std::vector<GURL>& urls) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
-
-  // Don't add a duplicate prefetch for the same host.
-  std::string key = main_frame_url.host();
-  if (base::ContainsKey(prefetcher_map_, key))
-    return;
-
-  auto prefetcher = base::MakeUnique<ResourcePrefetcher>(
-      this, config_.max_prefetches_inflight_per_navigation,
-      config_.max_prefetches_inflight_per_host_per_navigation, main_frame_url,
-      urls);
-  prefetcher->Start();
-  prefetcher_map_[key] = std::move(prefetcher);
-}
-
-void ResourcePrefetcherManager::MaybeRemovePrefetch(
-    const GURL& main_frame_url) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
-
-  std::string key = main_frame_url.host();
-  auto it = prefetcher_map_.find(key);
-  if (it != prefetcher_map_.end() &&
-      it->second->main_frame_url() == main_frame_url) {
-    it->second->Stop();
-  }
-}
-
-void ResourcePrefetcherManager::ResourcePrefetcherFinished(
-    ResourcePrefetcher* resource_prefetcher,
-    std::unique_ptr<ResourcePrefetcher::PrefetcherStats> stats) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
-
-  const GURL& main_frame_url = resource_prefetcher->main_frame_url();
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      base::BindOnce(&ResourcePrefetchPredictor::OnPrefetchingFinished,
-                     base::Unretained(predictor_), main_frame_url,
-                     base::Passed(std::move(stats))));
-
-  const std::string key = main_frame_url.host();
-  auto it = prefetcher_map_.find(key);
-  DCHECK(it != prefetcher_map_.end());
-  prefetcher_map_.erase(it);
-}
-
-net::URLRequestContext* ResourcePrefetcherManager::GetURLRequestContext() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
-
-  return context_getter_->GetURLRequestContext();
-}
-
-}  // namespace predictors