TaskManager: use an unordered_map for tracking network usage

chrome/browser/task_manager/task_manager_interface.h

Index: chrome/browser/task_manager/task_manager_interface.h
diff --git a/chrome/browser/task_manager/task_manager_interface.h b/chrome/browser/task_manager/task_manager_interface.h
index fcd9c32a2f3739cc77a5109a8aa8c78d7008267f..6e85f372f6e09e4146e7515915138c3733222c47 100644
--- a/chrome/browser/task_manager/task_manager_interface.h
+++ b/chrome/browser/task_manager/task_manager_interface.h
@@ -19,6 +19,7 @@
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/task_manager/providers/task.h"
+#include "chrome/browser/task_manager/sampling/task_manager_io_thread_helper.h"
 #include "chrome/browser/task_manager/task_manager_observer.h"
 #include "third_party/WebKit/public/platform/WebCache.h"
 #include "ui/gfx/image/image_skia.h"
@@ -29,10 +30,6 @@ namespace content {
 class WebContents;
 }  // namespace content
 
-namespace net {
-class URLRequest;
-}  // namespace net
-
 namespace task_manager {
 
 // Defines the interface for any implementation of the task manager.
@@ -52,13 +49,9 @@ class TaskManagerInterface {
 
   // This notification will be received on the IO thread from
   // ChromeNetworkDelegate to update the task manager with read network usage.
-  static void OnRawBytesRead(const net::URLRequest& request,
-                             int64_t bytes_read);
-
-  // This notification will be received on the IO thread from
-  // ChromeNetworkDelegate to update the task manager with sent network usage.
-  static void OnRawBytesSent(const net::URLRequest& request,
-                             int64_t bytes_sent);
+  static void OnRawBytesTransferred(BytesTransferredKey key,
+                                    int64_t bytes_read,
+                                    int64_t bytes_sent);
 
   void AddObserver(TaskManagerObserver* observer);
   void RemoveObserver(TaskManagerObserver* observer);