Extracted NetLog class's inner enum types into their own enum classes and

net/disk_cache/simple/simple_entry_impl.cc

 // Copyright (c) 2013 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 "net/disk_cache/simple/simple_entry_impl.h"
 
 #include <algorithm>
 #include <cstring>
 #include <limits>
 #include <utility>
@@ skipping 11 matching lines @@
 #include "base/time/time.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/disk_cache/net_log_parameters.h"
 #include "net/disk_cache/simple/simple_backend_impl.h"
 #include "net/disk_cache/simple/simple_histogram_macros.h"
 #include "net/disk_cache/simple/simple_index.h"
 #include "net/disk_cache/simple/simple_net_log_parameters.h"
 #include "net/disk_cache/simple/simple_synchronous_entry.h"
 #include "net/disk_cache/simple/simple_util.h"
+#include "net/log/net_log_source_type.h"
 #include "third_party/zlib/zlib.h"
 
 namespace disk_cache {
 namespace {
 
 // An entry can store sparse data taking up to 1 / kMaxSparseDataSizeDivisor of
 // the cache.
 const int64_t kMaxSparseDataSizeDivisor = 10;
 
 // Used in histograms, please only add entries at the end.
@@ skipping 135 matching lines @@
       entry_hash_(entry_hash),
       use_optimistic_operations_(operations_mode == OPTIMISTIC_OPERATIONS),
       last_used_(Time::Now()),
       last_modified_(last_used_),
       sparse_data_size_(0),
       open_count_(0),
       doomed_(false),
       state_(STATE_UNINITIALIZED),
       synchronous_entry_(NULL),
       net_log_(net::BoundNetLog::Make(net_log,
-                                      net::NetLog::SOURCE_DISK_CACHE_ENTRY)),
+                                  net::NetLogSourceType::DISK_CACHE_ENTRY)),
       stream_0_data_(new net::GrowableIOBuffer()) {
   static_assert(arraysize(data_size_) == arraysize(crc32s_end_offset_),
                 "arrays should be the same size");
   static_assert(arraysize(data_size_) == arraysize(crc32s_),
                 "arrays should be the same size");
   static_assert(arraysize(data_size_) == arraysize(have_written_),
                 "arrays should be the same size");
   static_assert(arraysize(data_size_) == arraysize(crc_check_state_),
                 "arrays should be the same size");
   MakeUninitialized();
-  net_log_.BeginEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY,
+  net_log_.BeginEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY,
       CreateNetLogSimpleEntryConstructionCallback(this));
 }
 
 void SimpleEntryImpl::SetActiveEntryProxy(
     std::unique_ptr<ActiveEntryProxy> active_entry_proxy) {
   DCHECK(!active_entry_proxy_);
   active_entry_proxy_.reset(active_entry_proxy.release());
 }
 
 int SimpleEntryImpl::OpenEntry(Entry** out_entry,
                                const CompletionCallback& callback) {
   DCHECK(backend_.get());
 
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_OPEN_CALL);
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_OPEN_CALL);
 
   bool have_index = backend_->index()->initialized();
   // This enumeration is used in histograms, add entries only at end.
   enum OpenEntryIndexEnum {
     INDEX_NOEXIST = 0,
     INDEX_MISS = 1,
     INDEX_HIT = 2,
     INDEX_MAX = 3,
   };
   OpenEntryIndexEnum open_entry_index_enum = INDEX_NOEXIST;
   if (have_index) {
     if (backend_->index()->Has(entry_hash_))
       open_entry_index_enum = INDEX_HIT;
     else
       open_entry_index_enum = INDEX_MISS;
   }
   SIMPLE_CACHE_UMA(ENUMERATION,
                    "OpenEntryIndexState", cache_type_,
                    open_entry_index_enum, INDEX_MAX);
 
   // If entry is not known to the index, initiate fast failover to the network.
   if (open_entry_index_enum == INDEX_MISS) {
     net_log_.AddEventWithNetErrorCode(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_OPEN_END,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_OPEN_END,
         net::ERR_FAILED);
     return net::ERR_FAILED;
   }
 
   pending_operations_.push(SimpleEntryOperation::OpenOperation(
       this, have_index, callback, out_entry));
   RunNextOperationIfNeeded();
   return net::ERR_IO_PENDING;
 }
 
 int SimpleEntryImpl::CreateEntry(Entry** out_entry,
                                  const CompletionCallback& callback) {
   DCHECK(backend_.get());
   DCHECK_EQ(entry_hash_, simple_util::GetEntryHashKey(key_));
 
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_CREATE_CALL);
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_CREATE_CALL);
 
   bool have_index = backend_->index()->initialized();
   int ret_value = net::ERR_FAILED;
   if (use_optimistic_operations_ &&
       state_ == STATE_UNINITIALIZED && pending_operations_.size() == 0) {
-    net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_CREATE_OPTIMISTIC);
+    net_log_.AddEvent(
+                  net::NetLogEventType::SIMPLE_CACHE_ENTRY_CREATE_OPTIMISTIC);
 
     ReturnEntryToCaller(out_entry);
     pending_operations_.push(SimpleEntryOperation::CreateOperation(
         this, have_index, CompletionCallback(), static_cast<Entry**>(NULL)));
     ret_value = net::OK;
   } else {
     pending_operations_.push(SimpleEntryOperation::CreateOperation(
         this, have_index, callback, out_entry));
     ret_value = net::ERR_IO_PENDING;
   }
 
   // We insert the entry in the index before creating the entry files in the
   // SimpleSynchronousEntry, because this way the worst scenario is when we
   // have the entry in the index but we don't have the created files yet, this
   // way we never leak files. CreationOperationComplete will remove the entry
   // from the index if the creation fails.
   backend_->index()->Insert(entry_hash_);
 
   RunNextOperationIfNeeded();
   return ret_value;
 }
 
 int SimpleEntryImpl::DoomEntry(const CompletionCallback& callback) {
   if (doomed_)
     return net::OK;
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_DOOM_CALL);
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_DOOM_BEGIN);
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_DOOM_CALL);
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_DOOM_BEGIN);
 
   MarkAsDoomed();
   if (backend_.get())
     backend_->OnDoomStart(entry_hash_);
   pending_operations_.push(SimpleEntryOperation::DoomOperation(this, callback));
   RunNextOperationIfNeeded();
   return net::ERR_IO_PENDING;
 }
 
 void SimpleEntryImpl::SetKey(const std::string& key) {
   key_ = key;
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_SET_KEY,
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_SET_KEY,
       net::NetLog::StringCallback("key", &key));
 }
 
 void SimpleEntryImpl::Doom() {
   DoomEntry(CompletionCallback());
 }
 
 void SimpleEntryImpl::Close() {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   DCHECK_LT(0, open_count_);
 
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_CLOSE_CALL);
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_CLOSE_CALL);
 
   if (--open_count_ > 0) {
     DCHECK(!HasOneRef());
     Release();  // Balanced in ReturnEntryToCaller().
     return;
   }
 
   pending_operations_.push(SimpleEntryOperation::CloseOperation(this));
   DCHECK(!HasOneRef());
   Release();  // Balanced in ReturnEntryToCaller().
@@ skipping 22 matching lines @@
 }
 
 int SimpleEntryImpl::ReadData(int stream_index,
                               int offset,
                               net::IOBuffer* buf,
                               int buf_len,
                               const CompletionCallback& callback) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
 
   if (net_log_.IsCapturing()) {
-    net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_READ_CALL,
+    net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_READ_CALL,
         CreateNetLogReadWriteDataCallback(stream_index, offset, buf_len,
                                           false));
   }
 
   if (stream_index < 0 || stream_index >= kSimpleEntryStreamCount ||
       buf_len < 0) {
     if (net_log_.IsCapturing()) {
-      net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_READ_END,
+      net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_READ_END,
           CreateNetLogReadWriteCompleteCallback(net::ERR_INVALID_ARGUMENT));
     }
 
     RecordReadResult(cache_type_, READ_RESULT_INVALID_ARGUMENT);
     return net::ERR_INVALID_ARGUMENT;
   }
   if (pending_operations_.empty() && (offset >= GetDataSize(stream_index) ||
                                       offset < 0 || !buf_len)) {
     if (net_log_.IsCapturing()) {
-      net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_READ_END,
+      net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_READ_END,
           CreateNetLogReadWriteCompleteCallback(0));
     }
 
     RecordReadResult(cache_type_, READ_RESULT_NONBLOCK_EMPTY_RETURN);
     return 0;
   }
 
   // TODO(clamy): return immediatly when reading from stream 0.
 
   // TODO(felipeg): Optimization: Add support for truly parallel read
   // operations.
   bool alone_in_queue =
       pending_operations_.size() == 0 && state_ == STATE_READY;
   pending_operations_.push(SimpleEntryOperation::ReadOperation(
       this, stream_index, offset, buf_len, buf, callback, alone_in_queue));
   RunNextOperationIfNeeded();
   return net::ERR_IO_PENDING;
 }
 
 int SimpleEntryImpl::WriteData(int stream_index,
                                int offset,
                                net::IOBuffer* buf,
                                int buf_len,
                                const CompletionCallback& callback,
                                bool truncate) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
 
   if (net_log_.IsCapturing()) {
     net_log_.AddEvent(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_WRITE_CALL,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_WRITE_CALL,
         CreateNetLogReadWriteDataCallback(stream_index, offset, buf_len,
                                           truncate));
   }
 
   if (stream_index < 0 || stream_index >= kSimpleEntryStreamCount ||
       offset < 0 || buf_len < 0) {
     if (net_log_.IsCapturing()) {
       net_log_.AddEvent(
-          net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_WRITE_END,
+          net::NetLogEventType::SIMPLE_CACHE_ENTRY_WRITE_END,
           CreateNetLogReadWriteCompleteCallback(net::ERR_INVALID_ARGUMENT));
     }
     RecordWriteResult(cache_type_, WRITE_RESULT_INVALID_ARGUMENT);
     return net::ERR_INVALID_ARGUMENT;
   }
   if (backend_.get() && offset + buf_len > backend_->GetMaxFileSize()) {
     if (net_log_.IsCapturing()) {
       net_log_.AddEvent(
-          net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_WRITE_END,
+          net::NetLogEventType::SIMPLE_CACHE_ENTRY_WRITE_END,
           CreateNetLogReadWriteCompleteCallback(net::ERR_FAILED));
     }
     RecordWriteResult(cache_type_, WRITE_RESULT_OVER_MAX_SIZE);
     return net::ERR_FAILED;
   }
   ScopedOperationRunner operation_runner(this);
 
   // Stream 0 data is kept in memory, so can be written immediatly if there are
   // no IO operations pending.
   if (stream_index == 0 && state_ == STATE_READY &&
@@ skipping 21 matching lines @@
     // here to avoid paying the price of the RefCountedThreadSafe atomic
     // operations.
     if (buf) {
       op_buf = new IOBuffer(buf_len);
       memcpy(op_buf->data(), buf->data(), buf_len);
     }
     op_callback = CompletionCallback();
     ret_value = buf_len;
     if (net_log_.IsCapturing()) {
       net_log_.AddEvent(
-          net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_WRITE_OPTIMISTIC,
+          net::NetLogEventType::SIMPLE_CACHE_ENTRY_WRITE_OPTIMISTIC,
           CreateNetLogReadWriteCompleteCallback(buf_len));
     }
   }
 
   pending_operations_.push(SimpleEntryOperation::WriteOperation(this,
                                                                 stream_index,
                                                                 offset,
                                                                 buf_len,
                                                                 op_buf.get(),
                                                                 truncate,
                                                                 optimistic,
                                                                 op_callback));
   return ret_value;
 }
 
 int SimpleEntryImpl::ReadSparseData(int64_t offset,
                                     net::IOBuffer* buf,
                                     int buf_len,
                                     const CompletionCallback& callback) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
 
   if (net_log_.IsCapturing()) {
-    net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_READ_SPARSE_CALL,
-                      CreateNetLogSparseOperationCallback(offset, buf_len));
+    net_log_.AddEvent(
+                  net::NetLogEventType::SIMPLE_CACHE_ENTRY_READ_SPARSE_CALL,
+                  CreateNetLogSparseOperationCallback(offset, buf_len));
   }
 
   ScopedOperationRunner operation_runner(this);
   pending_operations_.push(SimpleEntryOperation::ReadSparseOperation(
       this, offset, buf_len, buf, callback));
   return net::ERR_IO_PENDING;
 }
 
 int SimpleEntryImpl::WriteSparseData(int64_t offset,
                                      net::IOBuffer* buf,
                                      int buf_len,
                                      const CompletionCallback& callback) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
 
   if (net_log_.IsCapturing()) {
-    net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_WRITE_SPARSE_CALL,
-                      CreateNetLogSparseOperationCallback(offset, buf_len));
+    net_log_.AddEvent(
+                  net::NetLogEventType::SIMPLE_CACHE_ENTRY_WRITE_SPARSE_CALL,
+                  CreateNetLogSparseOperationCallback(offset, buf_len));
   }
 
   ScopedOperationRunner operation_runner(this);
   pending_operations_.push(SimpleEntryOperation::WriteSparseOperation(
       this, offset, buf_len, buf, callback));
   return net::ERR_IO_PENDING;
 }
 
 int SimpleEntryImpl::GetAvailableRange(int64_t offset,
                                        int len,
@@ skipping 26 matching lines @@
   // entry, so there's no need to coordinate which object is performing sparse
   // I/O.  Therefore, CancelSparseIO and ReadyForSparseIO succeed instantly.
   return net::OK;
 }
 
 SimpleEntryImpl::~SimpleEntryImpl() {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   DCHECK_EQ(0U, pending_operations_.size());
   DCHECK(state_ == STATE_UNINITIALIZED || state_ == STATE_FAILURE);
   DCHECK(!synchronous_entry_);
-  net_log_.EndEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY);
+  net_log_.EndEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY);
 }
 
 void SimpleEntryImpl::PostClientCallback(const CompletionCallback& callback,
                                          int result) {
   if (callback.is_null())
     return;
   // Note that the callback is posted rather than directly invoked to avoid
   // reentrancy issues.
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
@@ skipping 105 matching lines @@
     executing_operation_->ReleaseReferences();
     // |this| may have been deleted.
   }
 }
 
 void SimpleEntryImpl::OpenEntryInternal(bool have_index,
                                         const CompletionCallback& callback,
                                         Entry** out_entry) {
   ScopedOperationRunner operation_runner(this);
 
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_OPEN_BEGIN);
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_OPEN_BEGIN);
 
   if (state_ == STATE_READY) {
     ReturnEntryToCaller(out_entry);
     PostClientCallback(callback, net::OK);
     net_log_.AddEvent(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_OPEN_END,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_OPEN_END,
         CreateNetLogSimpleEntryCreationCallback(this, net::OK));
     return;
   }
   if (state_ == STATE_FAILURE) {
     PostClientCallback(callback, net::ERR_FAILED);
     net_log_.AddEvent(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_OPEN_END,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_OPEN_END,
         CreateNetLogSimpleEntryCreationCallback(this, net::ERR_FAILED));
     return;
   }
 
   DCHECK_EQ(STATE_UNINITIALIZED, state_);
   DCHECK(!synchronous_entry_);
   state_ = STATE_IO_PENDING;
   const base::TimeTicks start_time = base::TimeTicks::Now();
   std::unique_ptr<SimpleEntryCreationResults> results(
       new SimpleEntryCreationResults(SimpleEntryStat(
           last_used_, last_modified_, data_size_, sparse_data_size_)));
   Closure task =
       base::Bind(&SimpleSynchronousEntry::OpenEntry, cache_type_, path_, key_,
                  entry_hash_, have_index, results.get());
   Closure reply =
       base::Bind(&SimpleEntryImpl::CreationOperationComplete, this, callback,
                  start_time, base::Passed(&results), out_entry,
-                 net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_OPEN_END);
+                 net::NetLogEventType::SIMPLE_CACHE_ENTRY_OPEN_END);
   worker_pool_->PostTaskAndReply(FROM_HERE, task, reply);
 }
 
 void SimpleEntryImpl::CreateEntryInternal(bool have_index,
                                           const CompletionCallback& callback,
                                           Entry** out_entry) {
   ScopedOperationRunner operation_runner(this);
 
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_CREATE_BEGIN);
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_CREATE_BEGIN);
 
   if (state_ != STATE_UNINITIALIZED) {
     // There is already an active normal entry.
     net_log_.AddEvent(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_CREATE_END,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_CREATE_END,
         CreateNetLogSimpleEntryCreationCallback(this, net::ERR_FAILED));
     PostClientCallback(callback, net::ERR_FAILED);
     return;
   }
   DCHECK_EQ(STATE_UNINITIALIZED, state_);
   DCHECK(!synchronous_entry_);
 
   state_ = STATE_IO_PENDING;
 
   // Since we don't know the correct values for |last_used_| and
@@ skipping 14 matching lines @@
                             key_,
                             entry_hash_,
                             have_index,
                             results.get());
   Closure reply = base::Bind(&SimpleEntryImpl::CreationOperationComplete,
                              this,
                              callback,
                              start_time,
                              base::Passed(&results),
                              out_entry,
-                             net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_CREATE_END);
+                         net::NetLogEventType::SIMPLE_CACHE_ENTRY_CREATE_END);
   worker_pool_->PostTaskAndReply(FROM_HERE, task, reply);
 }
 
 void SimpleEntryImpl::CloseInternal() {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   typedef SimpleSynchronousEntry::CRCRecord CRCRecord;
   std::unique_ptr<std::vector<CRCRecord>> crc32s_to_write(
       new std::vector<CRCRecord>());
 
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_CLOSE_BEGIN);
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_CLOSE_BEGIN);
 
   if (state_ == STATE_READY) {
     DCHECK(synchronous_entry_);
     state_ = STATE_IO_PENDING;
     for (int i = 0; i < kSimpleEntryStreamCount; ++i) {
       if (have_written_[i]) {
         if (GetDataSize(i) == crc32s_end_offset_[i]) {
           int32_t crc = GetDataSize(i) == 0 ? crc32(0, Z_NULL, 0) : crc32s_[i];
           crc32s_to_write->push_back(CRCRecord(i, true, crc));
         } else {
@@ skipping 30 matching lines @@
 void SimpleEntryImpl::ReadDataInternal(int stream_index,
                                        int offset,
                                        net::IOBuffer* buf,
                                        int buf_len,
                                        const CompletionCallback& callback) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   ScopedOperationRunner operation_runner(this);
 
   if (net_log_.IsCapturing()) {
     net_log_.AddEvent(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_READ_BEGIN,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_READ_BEGIN,
         CreateNetLogReadWriteDataCallback(stream_index, offset, buf_len,
                                           false));
   }
 
   if (state_ == STATE_FAILURE || state_ == STATE_UNINITIALIZED) {
     if (!callback.is_null()) {
       RecordReadResult(cache_type_, READ_RESULT_BAD_STATE);
       // Note that the API states that client-provided callbacks for entry-level
       // (i.e. non-backend) operations (e.g. read, write) are invoked even if
       // the backend was already destroyed.
       base::ThreadTaskRunnerHandle::Get()->PostTask(
           FROM_HERE, base::Bind(callback, net::ERR_FAILED));
     }
     if (net_log_.IsCapturing()) {
       net_log_.AddEvent(
-          net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_READ_END,
+          net::NetLogEventType::SIMPLE_CACHE_ENTRY_READ_END,
           CreateNetLogReadWriteCompleteCallback(net::ERR_FAILED));
     }
     return;
   }
   DCHECK_EQ(STATE_READY, state_);
   if (offset >= GetDataSize(stream_index) || offset < 0 || !buf_len) {
     RecordReadResult(cache_type_, READ_RESULT_FAST_EMPTY_RETURN);
     // If there is nothing to read, we bail out before setting state_ to
     // STATE_IO_PENDING.
     if (!callback.is_null())
@@ skipping 41 matching lines @@
                                        int offset,
                                        net::IOBuffer* buf,
                                        int buf_len,
                                        const CompletionCallback& callback,
                                        bool truncate) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   ScopedOperationRunner operation_runner(this);
 
   if (net_log_.IsCapturing()) {
     net_log_.AddEvent(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_WRITE_BEGIN,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_WRITE_BEGIN,
         CreateNetLogReadWriteDataCallback(stream_index, offset, buf_len,
                                           truncate));
   }
 
   if (state_ == STATE_FAILURE || state_ == STATE_UNINITIALIZED) {
     RecordWriteResult(cache_type_, WRITE_RESULT_BAD_STATE);
     if (net_log_.IsCapturing()) {
       net_log_.AddEvent(
-          net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_WRITE_END,
+          net::NetLogEventType::SIMPLE_CACHE_ENTRY_WRITE_END,
           CreateNetLogReadWriteCompleteCallback(net::ERR_FAILED));
     }
     if (!callback.is_null()) {
       base::ThreadTaskRunnerHandle::Get()->PostTask(
           FROM_HERE, base::Bind(callback, net::ERR_FAILED));
     }
     // |this| may be destroyed after return here.
     return;
   }
 
@@ skipping 65 matching lines @@
 void SimpleEntryImpl::ReadSparseDataInternal(
     int64_t sparse_offset,
     net::IOBuffer* buf,
     int buf_len,
     const CompletionCallback& callback) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   ScopedOperationRunner operation_runner(this);
 
   if (net_log_.IsCapturing()) {
     net_log_.AddEvent(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_READ_SPARSE_BEGIN,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_READ_SPARSE_BEGIN,
         CreateNetLogSparseOperationCallback(sparse_offset, buf_len));
   }
 
   DCHECK_EQ(STATE_READY, state_);
   state_ = STATE_IO_PENDING;
 
   std::unique_ptr<int> result(new int());
   std::unique_ptr<base::Time> last_used(new base::Time());
   Closure task = base::Bind(
       &SimpleSynchronousEntry::ReadSparseData,
@@ skipping 11 matching lines @@
 void SimpleEntryImpl::WriteSparseDataInternal(
     int64_t sparse_offset,
     net::IOBuffer* buf,
     int buf_len,
     const CompletionCallback& callback) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   ScopedOperationRunner operation_runner(this);
 
   if (net_log_.IsCapturing()) {
     net_log_.AddEvent(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_WRITE_SPARSE_BEGIN,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_WRITE_SPARSE_BEGIN,
         CreateNetLogSparseOperationCallback(sparse_offset, buf_len));
   }
 
   DCHECK_EQ(STATE_READY, state_);
   state_ = STATE_IO_PENDING;
 
   uint64_t max_sparse_data_size = std::numeric_limits<int64_t>::max();
   if (backend_.get()) {
     uint64_t max_cache_size = backend_->index()->max_size();
     max_sparse_data_size = max_cache_size / kMaxSparseDataSizeDivisor;
@@ skipping 72 matching lines @@
       base::Bind(
           &SimpleEntryImpl::DoomOperationComplete, this, callback, state_));
   state_ = STATE_IO_PENDING;
 }
 
 void SimpleEntryImpl::CreationOperationComplete(
     const CompletionCallback& completion_callback,
     const base::TimeTicks& start_time,
     std::unique_ptr<SimpleEntryCreationResults> in_results,
     Entry** out_entry,
-    net::NetLog::EventType end_event_type) {
+    net::NetLogEventType end_event_type) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   DCHECK_EQ(state_, STATE_IO_PENDING);
   DCHECK(in_results);
   ScopedOperationRunner operation_runner(this);
   SIMPLE_CACHE_UMA(BOOLEAN,
                    "EntryCreationResult", cache_type_,
                    in_results->result == net::OK);
   if (in_results->result != net::OK) {
     if (in_results->result != net::ERR_FILE_EXISTS)
       MarkAsDoomed();
@@ skipping 83 matching lines @@
         offset == 0 ? crc32(0, Z_NULL, 0) : crc32s_[stream_index];
     crc32s_[stream_index] = crc32_combine(current_crc, *read_crc32, *result);
     crc32s_end_offset_[stream_index] += *result;
     if (!have_written_[stream_index] &&
         GetDataSize(stream_index) == crc32s_end_offset_[stream_index]) {
       // We have just read a file from start to finish, and so we have
       // computed a crc of the entire file. We can check it now. If a cache
       // entry has a single reader, the normal pattern is to read from start
       // to finish.
 
-      net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_CHECKSUM_BEGIN);
+      net_log_.AddEvent(
+                    net::NetLogEventType::SIMPLE_CACHE_ENTRY_CHECKSUM_BEGIN);
 
       std::unique_ptr<int> new_result(new int());
       Closure task = base::Bind(&SimpleSynchronousEntry::CheckEOFRecord,
                                 base::Unretained(synchronous_entry_),
                                 stream_index,
                                 *entry_stat,
                                 crc32s_[stream_index],
                                 new_result.get());
       Closure reply = base::Bind(&SimpleEntryImpl::ChecksumOperationComplete,
                                  this, *result, stream_index,
@@ skipping 13 matching lines @@
     RecordReadResult(cache_type_, READ_RESULT_SYNC_READ_FAILURE);
   } else {
     RecordReadResult(cache_type_, READ_RESULT_SUCCESS);
     if (crc_check_state_[stream_index] == CRC_CHECK_NEVER_READ_TO_END &&
         offset + *result == GetDataSize(stream_index)) {
       crc_check_state_[stream_index] = CRC_CHECK_NOT_DONE;
     }
   }
   if (net_log_.IsCapturing()) {
     net_log_.AddEvent(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_READ_END,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_READ_END,
         CreateNetLogReadWriteCompleteCallback(*result));
   }
 
   EntryOperationComplete(completion_callback, *entry_stat, std::move(result));
 }
 
 void SimpleEntryImpl::WriteOperationComplete(
     int stream_index,
     const CompletionCallback& completion_callback,
     std::unique_ptr<SimpleEntryStat> entry_stat,
     std::unique_ptr<int> result) {
   if (*result >= 0)
     RecordWriteResult(cache_type_, WRITE_RESULT_SUCCESS);
   else
     RecordWriteResult(cache_type_, WRITE_RESULT_SYNC_WRITE_FAILURE);
   if (net_log_.IsCapturing()) {
-    net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_WRITE_END,
+    net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_WRITE_END,
         CreateNetLogReadWriteCompleteCallback(*result));
   }
 
   if (*result < 0) {
     crc32s_end_offset_[stream_index] = 0;
   }
 
   EntryOperationComplete(completion_callback, *entry_stat, std::move(result));
 }
 
 void SimpleEntryImpl::ReadSparseOperationComplete(
     const CompletionCallback& completion_callback,
     std::unique_ptr<base::Time> last_used,
     std::unique_ptr<int> result) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   DCHECK(synchronous_entry_);
   DCHECK(result);
 
   if (net_log_.IsCapturing()) {
-    net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_READ_SPARSE_END,
+    net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_READ_SPARSE_END,
                       CreateNetLogReadWriteCompleteCallback(*result));
   }
 
   SimpleEntryStat entry_stat(*last_used, last_modified_, data_size_,
                              sparse_data_size_);
   EntryOperationComplete(completion_callback, entry_stat, std::move(result));
 }
 
 void SimpleEntryImpl::WriteSparseOperationComplete(
     const CompletionCallback& completion_callback,
     std::unique_ptr<SimpleEntryStat> entry_stat,
     std::unique_ptr<int> result) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   DCHECK(synchronous_entry_);
   DCHECK(result);
 
   if (net_log_.IsCapturing()) {
-    net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_WRITE_SPARSE_END,
-                      CreateNetLogReadWriteCompleteCallback(*result));
+    net_log_.AddEvent(
+                  net::NetLogEventType::SIMPLE_CACHE_ENTRY_WRITE_SPARSE_END,
+                  CreateNetLogReadWriteCompleteCallback(*result));
   }
 
   EntryOperationComplete(completion_callback, *entry_stat, std::move(result));
 }
 
 void SimpleEntryImpl::GetAvailableRangeOperationComplete(
     const CompletionCallback& completion_callback,
     std::unique_ptr<int> result) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   DCHECK(synchronous_entry_);
   DCHECK(result);
 
   SimpleEntryStat entry_stat(last_used_, last_modified_, data_size_,
                              sparse_data_size_);
   EntryOperationComplete(completion_callback, entry_stat, std::move(result));
 }
 
 void SimpleEntryImpl::DoomOperationComplete(
     const CompletionCallback& callback,
     State state_to_restore,
     int result) {
   state_ = state_to_restore;
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_DOOM_END);
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_DOOM_END);
   PostClientCallback(callback, result);
   RunNextOperationIfNeeded();
   if (backend_)
     backend_->OnDoomComplete(entry_hash_);
 }
 
 void SimpleEntryImpl::ChecksumOperationComplete(
     int orig_result,
     int stream_index,
     const CompletionCallback& completion_callback,
     std::unique_ptr<int> result) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   DCHECK(synchronous_entry_);
   DCHECK_EQ(STATE_IO_PENDING, state_);
   DCHECK(result);
 
   if (net_log_.IsCapturing()) {
     net_log_.AddEventWithNetErrorCode(
-        net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_CHECKSUM_END,
+        net::NetLogEventType::SIMPLE_CACHE_ENTRY_CHECKSUM_END,
         *result);
   }
 
   if (*result == net::OK) {
     *result = orig_result;
     if (orig_result >= 0)
       RecordReadResult(cache_type_, READ_RESULT_SUCCESS);
     else
       RecordReadResult(cache_type_, READ_RESULT_SYNC_READ_FAILURE);
   } else {
     RecordReadResult(cache_type_, READ_RESULT_SYNC_CHECKSUM_FAILURE);
   }
   if (net_log_.IsCapturing()) {
-    net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_READ_END,
+    net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_READ_END,
         CreateNetLogReadWriteCompleteCallback(*result));
   }
 
   SimpleEntryStat entry_stat(last_used_, last_modified_, data_size_,
                              sparse_data_size_);
   EntryOperationComplete(completion_callback, entry_stat, std::move(result));
 }
 
 void SimpleEntryImpl::CloseOperationComplete() {
   DCHECK(!synchronous_entry_);
   DCHECK_EQ(0, open_count_);
   DCHECK(STATE_IO_PENDING == state_ || STATE_FAILURE == state_ ||
          STATE_UNINITIALIZED == state_);
-  net_log_.AddEvent(net::NetLog::TYPE_SIMPLE_CACHE_ENTRY_CLOSE_END);
+  net_log_.AddEvent(net::NetLogEventType::SIMPLE_CACHE_ENTRY_CLOSE_END);
   AdjustOpenEntryCountBy(cache_type_, -1);
   MakeUninitialized();
   RunNextOperationIfNeeded();
 }
 
 void SimpleEntryImpl::UpdateDataFromEntryStat(
     const SimpleEntryStat& entry_stat) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   DCHECK(synchronous_entry_);
   DCHECK_EQ(STATE_READY, state_);
@@ skipping 163 matching lines @@
     }
     crc32s_end_offset_[stream_index] = offset + length;
   } else if (offset < crc32s_end_offset_[stream_index]) {
     // If a range for which the crc32 was already computed is rewritten, the
     // computation of the crc32 need to start from 0 again.
     crc32s_end_offset_[stream_index] = 0;
   }
 }
 
 }  // namespace disk_cache