First pass at adding http/backend cache to NetLog

net/disk_cache/in_flight_backend_io.cc

Index: net/disk_cache/in_flight_backend_io.cc
===================================================================
--- net/disk_cache/in_flight_backend_io.cc	(revision 68857)
+++ net/disk_cache/in_flight_backend_io.cc	(working copy)
@@ -7,6 +7,7 @@
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "net/base/net_errors.h"
+#include "net/base/net_log.h"
 #include "net/disk_cache/backend_impl.h"
 #include "net/disk_cache/entry_impl.h"
 #include "net/disk_cache/histogram_macros.h"
@@ -108,11 +109,15 @@
 void BackendIO::CloseEntryImpl(EntryImpl* entry) {
   operation_ = OP_CLOSE_ENTRY;
   entry_ = entry;
+  if (entry->net_log().IsLoggingAllEvents())
+    entry->net_log().AddEvent(net::NetLog::TYPE_DISK_CACHE_QUEUE_CLOSE, NULL);
 }
 
 void BackendIO::DoomEntryImpl(EntryImpl* entry) {
   operation_ = OP_DOOM_ENTRY;
   entry_ = entry;
+  if (entry->net_log().IsLoggingAllEvents())
+    entry->net_log().AddEvent(net::NetLog::TYPE_DISK_CACHE_QUEUE_DOOM, NULL);
 }
 
 void BackendIO::FlushQueue() {
@@ -132,6 +137,11 @@
   offset_ = offset;
   buf_ = buf;
   buf_len_ = buf_len;
+
+  if (entry->net_log().IsLoggingAllEvents()) {
+    entry->net_log().AddEvent(net::NetLog::TYPE_DISK_CACHE_QUEUE_READ_DATA,
+                              NULL);
+  }
 }
 
 void BackendIO::WriteData(EntryImpl* entry, int index, int offset,
@@ -143,6 +153,11 @@
   buf_ = buf;
   buf_len_ = buf_len;
   truncate_ = truncate;
+
+  if (entry->net_log().IsLoggingAllEvents()) {
+    entry->net_log().AddEvent(net::NetLog::TYPE_DISK_CACHE_QUEUE_WRITE_DATA,
+                              NULL);
+  }
 }
 
 void BackendIO::ReadSparseData(EntryImpl* entry, int64 offset,
@@ -152,6 +167,11 @@
   offset64_ = offset;
   buf_ = buf;
   buf_len_ = buf_len;
+
+  if (entry->net_log().IsLoggingAllEvents()) {
+    entry->net_log().AddEvent(net::NetLog::TYPE_DISK_CACHE_QUEUE_READ_SPARSE,
+                              NULL);
+  }
 }
 
 void BackendIO::WriteSparseData(EntryImpl* entry, int64 offset,
@@ -161,6 +181,11 @@
   offset64_ = offset;
   buf_ = buf;
   buf_len_ = buf_len;
+
+  if (entry->net_log().IsLoggingAllEvents()) {
+    entry->net_log().AddEvent(net::NetLog::TYPE_DISK_CACHE_QUEUE_WRITE_SPARSE,
+                              NULL);
+  }
 }
 
 void BackendIO::GetAvailableRange(EntryImpl* entry, int64 offset, int len,
@@ -170,6 +195,11 @@
   offset64_ = offset;
   buf_len_ = len;
   start_ = start;
+
+  if (entry->net_log().IsLoggingAllEvents()) {
+    entry->net_log().AddEvent(net::NetLog::TYPE_DISK_CACHE_QUEUE_GET_RANGE,
+                              NULL);
+  }
 }
 
 void BackendIO::CancelSparseIO(EntryImpl* entry) {