chromeos: Fix pixelated icons in app list and launcher (part 3)

ui/app_list/icon_cache.cc

Index: ui/app_list/icon_cache.cc
diff --git a/ui/app_list/icon_cache.cc b/ui/app_list/icon_cache.cc
deleted file mode 100644
index f69a50601f71480f35cc0d01ad1620989861fcf9..0000000000000000000000000000000000000000
--- a/ui/app_list/icon_cache.cc
+++ /dev/null
@@ -1,115 +0,0 @@
-// 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 "ui/app_list/icon_cache.h"
-
-#include <algorithm>
-
-#include "base/logging.h"
-#include "base/md5.h"
-#include "ui/gfx/size.h"
-
-namespace {
-
-// Predicator for sorting ImageSkiaRep by scale factor.
-bool ImageRepScaleFactorCompare(const gfx::ImageSkiaRep& rep1,
-                                const gfx::ImageSkiaRep& rep2) {
-  return rep1.scale_factor() < rep2.scale_factor();
-}
-
-// Gets cache key based on |image| contents and desired |size|.
-std::string GetKey(const gfx::ImageSkia& image, const gfx::Size& size) {
-  gfx::ImageSkia::ImageSkiaReps image_reps = image.image_reps();
-  DCHECK_GT(image_reps.size(), 0u);
-
-  std::sort(image_reps.begin(), image_reps.end(), &ImageRepScaleFactorCompare);
-
-  base::MD5Context ctx;
-  base::MD5Init(&ctx);
-  for (gfx::ImageSkia::ImageSkiaReps::const_iterator it = image_reps.begin();
-       it != image_reps.end(); ++it) {
-    const SkBitmap& bitmap = it->sk_bitmap();
-    SkAutoLockPixels image_lock(bitmap);
-
-    base::MD5Update(
-        &ctx,
-        base::StringPiece(reinterpret_cast<const char*>(bitmap.getPixels()),
-                          bitmap.getSize()));
-  }
-
-  base::MD5Digest digest;
-  base::MD5Final(&digest, &ctx);
-
-  return MD5DigestToBase16(digest) + "." + size.ToString();
-}
-
-}  // namespace
-
-namespace app_list {
-
-// static
-IconCache* IconCache::instance_ = NULL;
-
-// static
-void IconCache::CreateInstance() {
-  DCHECK(!instance_);
-  instance_ = new IconCache;
-}
-
-// static
-void IconCache::DeleteInstance() {
-  DCHECK(instance_);
-  delete instance_;
-  instance_ = NULL;
-}
-
-// static
-IconCache* IconCache::GetInstance() {
-  DCHECK(instance_);
-  return instance_;
-}
-
-void IconCache::MarkAllEntryUnused() {
-  for (Cache::iterator i = cache_.begin(); i != cache_.end(); ++i)
-    i->second.used = false;
-}
-
-void IconCache::PurgeAllUnused() {
-  for (Cache::iterator i = cache_.begin(); i != cache_.end();) {
-    Cache::iterator current(i);
-    ++i;
-    if (!current->second.used)
-      cache_.erase(current);
-  }
-}
-
-bool IconCache::Get(const gfx::ImageSkia& src,
-                    const gfx::Size& size,
-                    gfx::ImageSkia* processed) {
-  Cache::iterator it = cache_.find(GetKey(src, size));
-  if (it == cache_.end())
-    return false;
-
-  it->second.used = true;
-
-  if (processed)
-    *processed = it->second.image;
-  return true;
-}
-
-void IconCache::Put(const gfx::ImageSkia& src,
-                    const gfx::Size& size,
-                    const gfx::ImageSkia& processed) {
-  const std::string key = GetKey(src, size);
-  cache_[key].image = processed;
-  cache_[key].used = true;
-}
-
-IconCache::IconCache() {
-}
-
-IconCache::~IconCache() {
-}
-
-}  // namespace app_list