Make browsing_data component a layered component

components/browsing_data/storage_partition_http_cache_data_remover.cc

Index: components/browsing_data/storage_partition_http_cache_data_remover.cc
diff --git a/components/browsing_data/storage_partition_http_cache_data_remover.cc b/components/browsing_data/storage_partition_http_cache_data_remover.cc
deleted file mode 100644
index fabde8efbcfce6ca2636db93fa7c009b449be9de..0000000000000000000000000000000000000000
--- a/components/browsing_data/storage_partition_http_cache_data_remover.cc
+++ /dev/null
@@ -1,310 +0,0 @@
-// 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 "components/browsing_data/storage_partition_http_cache_data_remover.h"
-
-#include "base/location.h"
-#include "base/single_thread_task_runner.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "components/browsing_data/conditional_cache_deletion_helper.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/storage_partition.h"
-#include "net/base/sdch_manager.h"
-#include "net/disk_cache/blockfile/backend_impl.h"
-#include "net/disk_cache/disk_cache.h"
-#include "net/disk_cache/memory/mem_backend_impl.h"
-#include "net/disk_cache/simple/simple_backend_impl.h"
-#include "net/http/http_cache.h"
-#include "net/url_request/url_request_context.h"
-#include "net/url_request/url_request_context_getter.h"
-
-using content::BrowserThread;
-
-namespace browsing_data {
-
-StoragePartitionHttpCacheDataRemover::StoragePartitionHttpCacheDataRemover(
-    base::Callback<bool(const GURL&)> url_predicate,
-    base::Time delete_begin,
-    base::Time delete_end,
-    net::URLRequestContextGetter* main_context_getter,
-    net::URLRequestContextGetter* media_context_getter)
-    : url_predicate_(url_predicate),
-      delete_begin_(delete_begin),
-      delete_end_(delete_end),
-      main_context_getter_(main_context_getter),
-      media_context_getter_(media_context_getter),
-      next_cache_state_(STATE_NONE),
-      cache_(nullptr),
-      calculation_result_(0) {
-}
-
-StoragePartitionHttpCacheDataRemover::~StoragePartitionHttpCacheDataRemover() {
-}
-
-// static.
-StoragePartitionHttpCacheDataRemover*
-StoragePartitionHttpCacheDataRemover::CreateForRange(
-    content::StoragePartition* storage_partition,
-    base::Time delete_begin,
-    base::Time delete_end) {
-  return new StoragePartitionHttpCacheDataRemover(
-      base::Callback<bool(const GURL&)>(),  // Null callback.
-      delete_begin, delete_end,
-      storage_partition->GetURLRequestContext(),
-      storage_partition->GetMediaURLRequestContext());
-}
-
-// static.
-StoragePartitionHttpCacheDataRemover*
-StoragePartitionHttpCacheDataRemover::CreateForURLsAndRange(
-    content::StoragePartition* storage_partition,
-    const base::Callback<bool(const GURL&)>& url_predicate,
-    base::Time delete_begin,
-    base::Time delete_end) {
-  return new StoragePartitionHttpCacheDataRemover(
-      url_predicate, delete_begin, delete_end,
-      storage_partition->GetURLRequestContext(),
-      storage_partition->GetMediaURLRequestContext());
-}
-
-void StoragePartitionHttpCacheDataRemover::Remove(
-    const base::Closure& done_callback) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  DCHECK(!done_callback.is_null());
-  done_callback_ = done_callback;
-
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      base::Bind(
-          &StoragePartitionHttpCacheDataRemover::ClearHttpCacheOnIOThread,
-          base::Unretained(this)));
-}
-
-void StoragePartitionHttpCacheDataRemover::Count(
-    const net::Int64CompletionCallback& result_callback) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  DCHECK(!result_callback.is_null());
-  result_callback_ = result_callback;
-  calculation_result_ = 0;
-
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      base::Bind(
-          &StoragePartitionHttpCacheDataRemover::CountHttpCacheOnIOThread,
-          base::Unretained(this)));
-}
-
-void StoragePartitionHttpCacheDataRemover::ClearHttpCacheOnIOThread() {
-  DCHECK_CURRENTLY_ON(BrowserThread::IO);
-  next_cache_state_ = STATE_NONE;
-  DCHECK_EQ(STATE_NONE, next_cache_state_);
-  DCHECK(main_context_getter_.get());
-  DCHECK(media_context_getter_.get());
-
-  next_cache_state_ = STATE_CREATE_MAIN;
-  DoClearCache(net::OK);
-}
-
-void StoragePartitionHttpCacheDataRemover::CountHttpCacheOnIOThread() {
-  DCHECK_CURRENTLY_ON(BrowserThread::IO);
-  next_cache_state_ = STATE_NONE;
-  DCHECK_EQ(STATE_NONE, next_cache_state_);
-  DCHECK(main_context_getter_.get());
-  DCHECK(media_context_getter_.get());
-
-  next_cache_state_ = STATE_CREATE_MAIN;
-  DoCountCache(net::OK);
-}
-
-void StoragePartitionHttpCacheDataRemover::ClearedHttpCache() {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  done_callback_.Run();
-  base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, this);
-}
-
-void StoragePartitionHttpCacheDataRemover::CountedHttpCache() {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  result_callback_.Run(calculation_result_);
-  base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, this);
-}
-
-// The expected state sequence is STATE_NONE --> STATE_CREATE_MAIN -->
-// STATE_PROCESS_MAIN --> STATE_CREATE_MEDIA --> STATE_PROCESS_MEDIA -->
-// STATE_DONE, and any errors are ignored.
-void StoragePartitionHttpCacheDataRemover::DoClearCache(int rv) {
-  DCHECK_NE(STATE_NONE, next_cache_state_);
-
-  while (rv != net::ERR_IO_PENDING && next_cache_state_ != STATE_NONE) {
-    switch (next_cache_state_) {
-      case STATE_CREATE_MAIN:
-      case STATE_CREATE_MEDIA: {
-        // Get a pointer to the cache.
-        net::URLRequestContextGetter* getter =
-            (next_cache_state_ == STATE_CREATE_MAIN)
-                ? main_context_getter_.get()
-                : media_context_getter_.get();
-        net::HttpCache* http_cache = getter->GetURLRequestContext()
-                                         ->http_transaction_factory()
-                                         ->GetCache();
-
-        next_cache_state_ = (next_cache_state_ == STATE_CREATE_MAIN)
-                                ? STATE_PROCESS_MAIN
-                                : STATE_PROCESS_MEDIA;
-
-        // Clear QUIC server information from memory and the disk cache.
-        http_cache->GetSession()
-            ->quic_stream_factory()
-            ->ClearCachedStatesInCryptoConfig();
-
-        // Clear SDCH dictionary state.
-        net::SdchManager* sdch_manager =
-            getter->GetURLRequestContext()->sdch_manager();
-        // The test is probably overkill, since chrome should always have an
-        // SdchManager.  But in general the URLRequestContext  is *not*
-        // guaranteed to have an SdchManager, so checking is wise.
-        if (sdch_manager)
-          sdch_manager->ClearData();
-
-        rv = http_cache->GetBackend(
-            &cache_,
-            base::Bind(&StoragePartitionHttpCacheDataRemover::DoClearCache,
-                       base::Unretained(this)));
-        break;
-      }
-      case STATE_PROCESS_MAIN:
-      case STATE_PROCESS_MEDIA: {
-        next_cache_state_ = (next_cache_state_ == STATE_PROCESS_MAIN)
-                                ? STATE_CREATE_MEDIA
-                                : STATE_DONE;
-
-        // |cache_| can be null if it cannot be initialized.
-        if (cache_) {
-          if (!url_predicate_.is_null()) {
-            rv = (new ConditionalCacheDeletionHelper(
-                cache_,
-                ConditionalCacheDeletionHelper::CreateURLAndTimeCondition(
-                    url_predicate_,
-                    delete_begin_,
-                    delete_end_)))->DeleteAndDestroySelfWhenFinished(
-                        base::Bind(
-                            &StoragePartitionHttpCacheDataRemover::DoClearCache,
-                            base::Unretained(this)));
-          } else if (delete_begin_.is_null() && delete_end_.is_max()) {
-            rv = cache_->DoomAllEntries(base::Bind(
-                &StoragePartitionHttpCacheDataRemover::DoClearCache,
-                base::Unretained(this)));
-          } else {
-            rv = cache_->DoomEntriesBetween(
-                delete_begin_, delete_end_,
-                base::Bind(
-                    &StoragePartitionHttpCacheDataRemover::DoClearCache,
-                    base::Unretained(this)));
-          }
-          cache_ = NULL;
-        }
-        break;
-      }
-      case STATE_DONE: {
-        cache_ = NULL;
-        next_cache_state_ = STATE_NONE;
-
-        // Notify the UI thread that we are done.
-        BrowserThread::PostTask(
-            BrowserThread::UI, FROM_HERE,
-            base::Bind(&StoragePartitionHttpCacheDataRemover::ClearedHttpCache,
-                       base::Unretained(this)));
-        return;
-      }
-      default: {
-        NOTREACHED() << "bad state";
-        next_cache_state_ = STATE_NONE;  // Stop looping.
-        return;
-      }
-    }
-  }
-}
-
-// The expected state sequence is STATE_NONE --> STATE_CREATE_MAIN -->
-// STATE_PROCESS_MAIN --> STATE_CREATE_MEDIA --> STATE_PROCESS_MEDIA -->
-// STATE_DONE. On error, we jump directly to STATE_DONE.
-void StoragePartitionHttpCacheDataRemover::DoCountCache(int rv) {
-  DCHECK_NE(STATE_NONE, next_cache_state_);
-
-  while (rv != net::ERR_IO_PENDING && next_cache_state_ != STATE_NONE) {
-    // On error, finish and return the error code. A valid result value might
-    // be of two types - either net::OK from the CREATE states, or the result
-    // of calculation from the PROCESS states. Since net::OK == 0, it is valid
-    // to simply add the value to the final calculation result.
-    if (rv < 0) {
-      calculation_result_ = rv;
-      next_cache_state_ = STATE_DONE;
-    } else {
-      DCHECK_EQ(0, net::OK);
-      calculation_result_ += rv;
-    }
-
-    switch (next_cache_state_) {
-      case STATE_CREATE_MAIN:
-      case STATE_CREATE_MEDIA: {
-        // Get a pointer to the cache.
-        net::URLRequestContextGetter* getter =
-            (next_cache_state_ == STATE_CREATE_MAIN)
-                ? main_context_getter_.get()
-                : media_context_getter_.get();
-        net::HttpCache* http_cache = getter->GetURLRequestContext()
-                                         ->http_transaction_factory()
-                                         ->GetCache();
-
-        next_cache_state_ = (next_cache_state_ == STATE_CREATE_MAIN)
-                                ? STATE_PROCESS_MAIN
-                                : STATE_PROCESS_MEDIA;
-
-        rv = http_cache->GetBackend(
-            &cache_,
-            base::Bind(&StoragePartitionHttpCacheDataRemover::DoCountCache,
-                       base::Unretained(this)));
-        break;
-      }
-      case STATE_PROCESS_MAIN:
-      case STATE_PROCESS_MEDIA: {
-        next_cache_state_ = (next_cache_state_ == STATE_PROCESS_MAIN)
-                                ? STATE_CREATE_MEDIA
-                                : STATE_DONE;
-
-        // |cache_| can be null if it cannot be initialized.
-        if (cache_) {
-          if (delete_begin_.is_null() && delete_end_.is_max()) {
-            rv = cache_->CalculateSizeOfAllEntries(
-                base::Bind(
-                    &StoragePartitionHttpCacheDataRemover::DoCountCache,
-                    base::Unretained(this)));
-          } else {
-            // TODO(msramek): Implement this when we need it.
-            DoCountCache(net::ERR_NOT_IMPLEMENTED);
-          }
-          cache_ = NULL;
-        }
-        break;
-      }
-      case STATE_DONE: {
-        cache_ = NULL;
-        next_cache_state_ = STATE_NONE;
-
-        // Notify the UI thread that we are done.
-        BrowserThread::PostTask(
-            BrowserThread::UI, FROM_HERE,
-            base::Bind(&StoragePartitionHttpCacheDataRemover::CountedHttpCache,
-                       base::Unretained(this)));
-        return;
-      }
-      default: {
-        NOTREACHED() << "bad state";
-        next_cache_state_ = STATE_NONE;  // Stop looping.
-        return;
-      }
-    }
-  }
-}
-
-}  // namespace browsing_data