[TaskManager] Allow a Task to mutate its PID after creation

chrome/browser/task_manager/task_manager_browsertest_util.cc

 // Copyright 2016 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_manager/task_manager_browsertest_util.h"
 
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/run_loop.h"
@@ skipping 88 matching lines @@
   }
 
   int64_t GetColumnValue(int index) {
     return task_manager_tester_->GetColumnValue(column_specifier_, index);
   }
 
   const char* GetColumnName() {
     switch (column_specifier_) {
       case ColumnSpecifier::COLUMN_NONE:
         return "N/A";
+      case ColumnSpecifier::PROCESS_ID:
+        return "Process ID";
+      case ColumnSpecifier::PHYSICAL_MEMORY:
+        return "Physical Memory";
       case ColumnSpecifier::V8_MEMORY:
         return "V8 Memory";
       case ColumnSpecifier::V8_MEMORY_USED:
         return "V8 Memory Used";
       case ColumnSpecifier::SQLITE_MEMORY_USED:
         return "SQLite Memory Used";
       case ColumnSpecifier::IDLE_WAKEUPS:
         return "Idle wake ups";
       case ColumnSpecifier::MEMORY_STATE:
         return "Memory State";
@@ skipping 130 matching lines @@
 base::string16 MatchUtility(const base::string16& title) {
   return l10n_util::GetStringFUTF16(IDS_TASK_MANAGER_UTILITY_PREFIX, title);
 }
 
 base::string16 MatchAnyUtility() {
   return MatchUtility(base::ASCIIToUTF16("*"));
 }
 
 }  // namespace browsertest_util
 }  // namespace task_manager