Remove the TableRowNSImageCache.

chrome/browser/ui/cocoa/table_row_nsimage_cache.mm

-// 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/table_row_nsimage_cache.h"
-
-#include "base/logging.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/gfx/image/image_skia_util_mac.h"
-
-TableRowNSImageCache::TableRowNSImageCache(Table* model)
-    : model_(model),
-      icon_images_([[NSPointerArray alloc] initWithOptions:
-          NSPointerFunctionsStrongMemory |
-          NSPointerFunctionsObjectPersonality]) {
-  int count = model_->RowCount();
-  [icon_images_ setCount:count];
-}
-
-TableRowNSImageCache::~TableRowNSImageCache() {}
-
-void TableRowNSImageCache::OnModelChanged() {
-  int count = model_->RowCount();
-  [icon_images_ setCount:0];
-  [icon_images_ setCount:count];
-}
-
-void TableRowNSImageCache::OnItemsChanged(int start, int length) {
-  DCHECK_LE(start + length, static_cast<int>([icon_images_ count]));
-  for (int i = start; i < (start + length); ++i) {
-    [icon_images_ replacePointerAtIndex:i withPointer:NULL];
-  }
-  DCHECK_EQ(model_->RowCount(),
-            static_cast<int>([icon_images_ count]));
-}
-
-void TableRowNSImageCache::OnItemsAdded(int start, int length) {
-  DCHECK_LE(start, static_cast<int>([icon_images_ count]));
-
-  // -[NSPointerArray insertPointer:atIndex:] throws if index == count.
-  // Instead expand the array with NULLs.
-  if (start == static_cast<int>([icon_images_ count])) {
-    [icon_images_ setCount:start + length];
-  } else {
-    for (int i = 0; i < length; ++i) {
-      [icon_images_ insertPointer:NULL atIndex:start];  // Values slide up.
-    }
-  }
-  DCHECK_EQ(model_->RowCount(),
-            static_cast<int>([icon_images_ count]));
-}
-
-void TableRowNSImageCache::OnItemsRemoved(int start, int length) {
-  DCHECK_LE(start + length, static_cast<int>([icon_images_ count]));
-  for (int i = 0; i < length; ++i) {
-    [icon_images_ removePointerAtIndex:start];  // Values slide down.
-  }
-  DCHECK_EQ(model_->RowCount(),
-            static_cast<int>([icon_images_ count]));
-}
-
-NSImage* TableRowNSImageCache::GetImageForRow(int row) {
-  DCHECK_EQ(model_->RowCount(),
-            static_cast<int>([icon_images_ count]));
-  DCHECK_GE(row, 0);
-  DCHECK_LT(row, static_cast<int>([icon_images_ count]));
-  NSImage* image = static_cast<NSImage*>([icon_images_ pointerAtIndex:row]);
-  if (!image) {
-    const gfx::ImageSkia image_skia_icon =
-        model_->GetIcon(row);
-    // This means GetIcon() will get called until it returns a non-empty image.
-    // Empty images are intentionally not cached.
-    if (!image_skia_icon.isNull()) {
-      image = gfx::NSImageFromImageSkia(image_skia_icon);
-      DCHECK(image);
-      [icon_images_ replacePointerAtIndex:row withPointer:image];
-    }
-  }
-  return image;
-}
-