Cleanup: Typedef std::pairs in TaskManager code.

chrome/browser/ui/cocoa/task_manager_mac.mm

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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/cocoa/task_manager_mac.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/mac/bundle_locations.h"
 #include "base/mac/mac_util.h"
@@ skipping 50 matching lines @@
 };
 
 class SortHelper {
  public:
   SortHelper(TaskManagerModel* model, NSSortDescriptor* column)
       : sort_column_([[column key] intValue]),
         ascending_([column ascending]),
         model_(model) {}
 
   bool operator()(int a, int b) {
-    std::pair<int, int> group_range1 = model_->GetGroupRangeForResource(a);
-    std::pair<int, int> group_range2 = model_->GetGroupRangeForResource(b);
+    TaskManagerModel::GroupRange group_range1 =
+        model_->GetGroupRangeForResource(a);
+    TaskManagerModel::GroupRange group_range2 =
+        model_->GetGroupRangeForResource(b);
     if (group_range1 == group_range2) {
       // The two rows are in the same group, sort so that items in the same
       // group always appear in the same order. |ascending_| is intentionally
       // ignored.
       return a < b;
     }
     // Sort by the first entry of each of the groups.
     int cmp_result = model_->CompareValues(
         group_range1.first, group_range2.first, sort_column_);
     if (!ascending_)
@@ skipping 268 matching lines @@
   // are selected as well. Also, check if the selection contains the browser
   // process.
   NSIndexSet* selection = [tableView_ selectedRowIndexes];
   for (NSUInteger i = [selection lastIndex];
        i != NSNotFound;
        i = [selection indexLessThanIndex:i]) {
     int modelIndex = viewToModelMap_[i];
     if (taskManager_->IsBrowserProcess(modelIndex))
       selectionContainsBrowserProcess = true;
 
-    std::pair<int, int> rangePair =
+    TaskManagerModel::GroupRange rangePair =
         model_->GetGroupRangeForResource(modelIndex);
     NSMutableIndexSet* indexSet = [NSMutableIndexSet indexSet];
     for (int j = 0; j < rangePair.second; ++j)
       [indexSet addIndex:modelToViewMap_[rangePair.first + j]];
     [tableView_ selectRowIndexes:indexSet byExtendingSelection:YES];
   }
 
   bool enabled = [selection count] > 0 && !selectionContainsBrowserProcess;
   [endProcessButton_ setEnabled:enabled];
 }
@@ skipping 271 matching lines @@
       // "Task Manager" so close the existing window and fall through to
       // open a new one.
       [[instance_->window_controller_ window] close];
     }
   }
   // Create a new instance.
   instance_ = new TaskManagerMac(TaskManager::GetInstance(),
                                  highlight_background_resources);
   instance_->model_->StartUpdating();
 }