Fix various TaskManager bugs and add new enhancements

chrome/browser/task_management/sampling/task_manager_impl.cc

 // 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 "chrome/browser/task_management/sampling/task_manager_impl.h"
 
 #include "base/stl_util.h"
 #include "chrome/browser/task_management/providers/browser_process_task_provider.h"
 #include "chrome/browser/task_management/providers/child_process_task_provider.h"
 #include "chrome/browser/task_management/providers/web_contents/web_contents_task_provider.h"
@@ skipping 74 matching lines @@
 }
 
 int TaskManagerImpl::GetIdleWakeupsPerSecond(TaskId task_id) const {
   return GetTaskGroupByTaskId(task_id)->idle_wakeups_per_second();
 }
 
 int TaskManagerImpl::GetNaClDebugStubPort(TaskId task_id) const {
 #if !defined(DISABLE_NACL)
   return GetTaskGroupByTaskId(task_id)->nacl_debug_stub_port();
 #else
-  return -1;
+  return -2;
 #endif  // !defined(DISABLE_NACL)
 }
 
 void TaskManagerImpl::GetGDIHandles(TaskId task_id,
                                     int64* current,
                                     int64* peak) const {
 #if defined(OS_WIN)
   const TaskGroup* task_group = GetTaskGroupByTaskId(task_id);
   *current = task_group->gdi_current_handles();
   *peak = task_group->gdi_peak_handles();
@@ skipping 38 matching lines @@
 }
 
 Task::Type TaskManagerImpl::GetType(TaskId task_id) const {
   return GetTaskByTaskId(task_id)->GetType();
 }
 
 int64 TaskManagerImpl::GetNetworkUsage(TaskId task_id) const {
   return GetTaskByTaskId(task_id)->network_usage();
 }
 
+int64 TaskManagerImpl::GetProcessTotalNetworkUsage(TaskId task_id) const {
+  return GetTaskGroupByTaskId(task_id)->per_process_network_usage();
+}
+
 int64 TaskManagerImpl::GetSqliteMemoryUsed(TaskId task_id) const {
   return GetTaskByTaskId(task_id)->GetSqliteMemoryUsed();
 }
 
 bool TaskManagerImpl::GetV8Memory(TaskId task_id,
                                   int64* allocated,
                                   int64* used) const {
   const Task* task = GetTaskByTaskId(task_id);
   if (!task->ReportsV8Memory())
     return false;
@@ skipping 183 matching lines @@
   DCHECK(ContainsKey(task_groups_by_task_id_, task_id));
 
   return task_groups_by_task_id_.at(task_id);
 }
 
 Task* TaskManagerImpl::GetTaskByTaskId(TaskId task_id) const {
   return GetTaskGroupByTaskId(task_id)->GetTaskById(task_id);
 }
 
 }  // namespace task_management