Move CancelableTaskTracker to //base/task/CancelableTaskTracker.

chrome/browser/ui/webui/net_internals/net_internals_ui.cc

Index: chrome/browser/ui/webui/net_internals/net_internals_ui.cc
diff --git a/chrome/browser/ui/webui/net_internals/net_internals_ui.cc b/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
index 5b1ed0e1492939da6cac0e41d66275b6ba5e0b55..56448823ec4b9c280f4e4e35ed5c62bb9eda9fa8 100644
--- a/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
+++ b/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
@@ -26,6 +26,7 @@
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/task/cancelable_task_tracker.h"
 #include "base/threading/worker_pool.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
@@ -42,7 +43,6 @@
 #include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/extensions/extension_basic_info.h"
-#include "chrome/common/cancelable_task_tracker.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/logging_chrome.h"
@@ -443,9 +443,9 @@ class NetInternalsMessageHandler
     scoped_ptr<chromeos::system::LogDictionaryType> logs_;
     bool logs_received_;
     bool logs_requested_;
-    CancelableTaskTracker tracker_;
+    base::CancelableTaskTracker tracker_;
     // Libcros request task ID.
-    CancelableTaskTracker::TaskId syslogs_task_id_;
+    base::CancelableTaskTracker::TaskId syslogs_task_id_;
   };
 #endif  // defined(OS_CHROMEOS)