Revert of [Android] Use UIResource for overscroll glow

content/browser/android/system_ui_resource_manager_impl.cc

Index: content/browser/android/system_ui_resource_manager_impl.cc
diff --git a/content/browser/android/system_ui_resource_manager_impl.cc b/content/browser/android/system_ui_resource_manager_impl.cc
deleted file mode 100644
index 6da221b888a530235b33f43955daa5c93ed93672..0000000000000000000000000000000000000000
--- a/content/browser/android/system_ui_resource_manager_impl.cc
+++ /dev/null
@@ -1,137 +0,0 @@
-// Copyright 2014 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 "content/browser/android/system_ui_resource_manager_impl.h"
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/location.h"
-#include "base/observer_list.h"
-#include "base/threading/worker_pool.h"
-#include "cc/resources/ui_resource_bitmap.h"
-#include "content/public/browser/android/ui_resource_client_android.h"
-#include "content/public/browser/android/ui_resource_provider.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "ui/gfx/android/java_bitmap.h"
-
-namespace content {
-
-class SystemUIResourceManagerImpl::Entry
-    : public content::UIResourceClientAndroid {
- public:
-  explicit Entry(UIResourceProvider* provider) : id_(0), provider_(provider) {
-    DCHECK(provider);
-  }
-
-  virtual ~Entry() {
-    if (id_)
-      provider_->DeleteUIResource(id_);
-    id_ = 0;
-  }
-
-  void SetBitmap(const SkBitmap& bitmap) {
-    DCHECK(bitmap_.empty());
-    DCHECK(!bitmap.empty());
-    DCHECK(!id_);
-    bitmap_ = bitmap;
-  }
-
-  cc::UIResourceId GetUIResourceId() {
-    if (bitmap_.empty())
-      return 0;
-    if (!id_)
-      id_ = provider_->CreateUIResource(this);
-    return id_;
-  }
-
-  // content::UIResourceClient implementation.
-  virtual cc::UIResourceBitmap GetBitmap(cc::UIResourceId uid,
-                                         bool resource_lost) OVERRIDE {
-    DCHECK(!bitmap_.empty());
-    return cc::UIResourceBitmap(bitmap_);
-  }
-
-  // content::UIResourceClientAndroid implementation.
-  virtual void UIResourceIsInvalid() OVERRIDE { id_ = 0; }
-
-  const SkBitmap& bitmap() const { return bitmap_; }
-
- private:
-  SkBitmap bitmap_;
-  cc::UIResourceId id_;
-  UIResourceProvider* provider_;
-
-  DISALLOW_COPY_AND_ASSIGN(Entry);
-};
-
-SystemUIResourceManagerImpl::SystemUIResourceManagerImpl(
-    UIResourceProvider* ui_resource_provider)
-    : ui_resource_provider_(ui_resource_provider), weak_factory_(this) {
-}
-
-SystemUIResourceManagerImpl::~SystemUIResourceManagerImpl() {
-}
-
-void SystemUIResourceManagerImpl::PreloadResource(ResourceType type) {
-  GetEntry(type);
-}
-
-cc::UIResourceId SystemUIResourceManagerImpl::GetUIResourceId(
-    ResourceType type) {
-  return GetEntry(type)->GetUIResourceId();
-}
-
-SystemUIResourceManagerImpl::Entry* SystemUIResourceManagerImpl::GetEntry(
-    ResourceType type) {
-  DCHECK_GE(type, RESOURCE_TYPE_FIRST);
-  DCHECK_LE(type, RESOURCE_TYPE_LAST);
-  if (!resource_map_[type]) {
-    resource_map_[type].reset(new Entry(ui_resource_provider_));
-    // Lazily build the resource.
-    BuildResource(type);
-  }
-  return resource_map_[type].get();
-}
-
-void SystemUIResourceManagerImpl::BuildResource(ResourceType type) {
-  DCHECK(GetEntry(type)->bitmap().empty());
-
-  // Instead of blocking the main thread, we post a task to load the bitmap.
-  SkBitmap* bitmap = new SkBitmap();
-  base::Closure load_bitmap =
-      base::Bind(&SystemUIResourceManagerImpl::LoadBitmap, type, bitmap);
-  base::Closure finished_load =
-      base::Bind(&SystemUIResourceManagerImpl::OnFinishedLoadBitmap,
-                 weak_factory_.GetWeakPtr(),
-                 type,
-                 base::Owned(bitmap));
-  base::WorkerPool::PostTaskAndReply(
-      FROM_HERE, load_bitmap, finished_load, true);
-}
-
-void SystemUIResourceManagerImpl::LoadBitmap(ResourceType type,
-                                             SkBitmap* bitmap_holder) {
-  SkBitmap bitmap;
-  switch (type) {
-    case ui::SystemUIResourceManager::OVERSCROLL_EDGE:
-      bitmap = gfx::CreateSkBitmapFromAndroidResource(
-          "android:drawable/overscroll_edge", gfx::Size(128, 12));
-      break;
-    case ui::SystemUIResourceManager::OVERSCROLL_GLOW:
-      bitmap = gfx::CreateSkBitmapFromAndroidResource(
-          "android:drawable/overscroll_glow", gfx::Size(128, 64));
-      break;
-  }
-  bitmap.setImmutable();
-  *bitmap_holder = bitmap;
-}
-
-void SystemUIResourceManagerImpl::OnFinishedLoadBitmap(
-    ResourceType type,
-    SkBitmap* bitmap_holder) {
-  DCHECK(bitmap_holder);
-  GetEntry(type)->SetBitmap(*bitmap_holder);
-}
-
-}  // namespace content