Remove "View Background Pages".

chrome/browser/ui/webui/task_manager/task_manager_handler.cc

 // Copyright (c) 2012 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/ui/webui/task_manager/task_manager_handler.h"
 
 #include <algorithm>
 #include <functional>
 
 #include "base/bind.h"
@@ skipping 246 matching lines @@
 base::DictionaryValue* TaskManagerHandler::CreateTaskGroupValue(
     int group_index) {
   DictionaryValue* val = new DictionaryValue();
 
   if (group_index >= model_->GroupCount())
      return val;
 
   int index = model_->GetResourceIndexForGroup(group_index, 0);
   int length = model_->GetGroupRangeForResource(index).second;
 
-  // Forces to set following 3 columns regardless of |enable_columns|.
+  // Forces to set following column regardless of |enable_columns|.
   val->SetInteger("index", index);
-  val->SetBoolean("isBackgroundResource",
-                  model_->IsBackgroundResource(index));
   CreateGroupColumnList("processId", index, 1, val);
   CreateGroupColumnList("type", index, length, val);
   CreateGroupColumnList("uniqueId", index, length, val);
 
   for (size_t i = 0; i < arraysize(kColumnsList); ++i) {
     const std::string column_id = kColumnsList[i].column_id;
 
     if (enabled_columns_.find(column_id) == enabled_columns_.end())
       continue;
 
@@ skipping 138 matching lines @@
     return Value::CreateDoubleValue(v8_memory);
   }
   if (column_name == "canInspect")
     return Value::CreateBooleanValue(model_->CanInspect(i));
   if (column_name == "canActivate")
     return Value::CreateBooleanValue(model_->CanActivate(i));
 
   NOTREACHED();
   return NULL;
 }