Revert of Move content/browser/power_save_blocker to //device/power_save_blocker

content/browser/power_save_blocker_android.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 "base/android/jni_android.h"
+#include "base/bind.h"
+#include "base/location.h"
+#include "base/logging.h"
+#include "base/macros.h"
+#include "content/browser/power_save_blocker_impl.h"
+#include "jni/PowerSaveBlocker_jni.h"
+#include "ui/android/view_android.h"
+
+namespace content {
+
+using base::android::AttachCurrentThread;
+
+class PowerSaveBlockerImpl::Delegate
+    : public base::RefCountedThreadSafe<PowerSaveBlockerImpl::Delegate> {
+ public:
+  Delegate(base::WeakPtr<ui::ViewAndroid> view_android,
+           scoped_refptr<base::SequencedTaskRunner> ui_task_runner);
+
+  // Does the actual work to apply or remove the desired power save block.
+  void ApplyBlock();
+  void RemoveBlock();
+
+ private:
+  friend class base::RefCountedThreadSafe<Delegate>;
+  ~Delegate();
+
+  base::WeakPtr<ui::ViewAndroid> view_android_;
+
+  base::android::ScopedJavaGlobalRef<jobject> java_power_save_blocker_;
+
+  scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(Delegate);
+};
+
+PowerSaveBlockerImpl::Delegate::Delegate(
+    base::WeakPtr<ui::ViewAndroid> view_android,
+    scoped_refptr<base::SequencedTaskRunner> ui_task_runner)
+    : view_android_(view_android), ui_task_runner_(ui_task_runner) {
+  JNIEnv* env = AttachCurrentThread();
+  java_power_save_blocker_.Reset(Java_PowerSaveBlocker_create(env));
+}
+
+PowerSaveBlockerImpl::Delegate::~Delegate() {
+}
+
+void PowerSaveBlockerImpl::Delegate::ApplyBlock() {
+  DCHECK(ui_task_runner_->RunsTasksOnCurrentThread());
+
+  ScopedJavaLocalRef<jobject> obj(java_power_save_blocker_);
+  JNIEnv* env = AttachCurrentThread();
+  if (view_android_) {
+    Java_PowerSaveBlocker_applyBlock(
+        env, obj.obj(), view_android_->GetViewAndroidDelegate().obj());
+  }
+}
+
+void PowerSaveBlockerImpl::Delegate::RemoveBlock() {
+  DCHECK(ui_task_runner_->RunsTasksOnCurrentThread());
+  ScopedJavaLocalRef<jobject> obj(java_power_save_blocker_);
+  JNIEnv* env = AttachCurrentThread();
+  if (view_android_) {
+    Java_PowerSaveBlocker_removeBlock(
+        env, obj.obj(), view_android_->GetViewAndroidDelegate().obj());
+  }
+}
+
+PowerSaveBlockerImpl::PowerSaveBlockerImpl(
+    PowerSaveBlockerType type,
+    Reason reason,
+    const std::string& description,
+    scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
+    scoped_refptr<base::SingleThreadTaskRunner> blocking_task_runner)
+    : ui_task_runner_(ui_task_runner),
+      blocking_task_runner_(blocking_task_runner) {
+  // Don't support kPowerSaveBlockPreventAppSuspension
+}
+
+PowerSaveBlockerImpl::~PowerSaveBlockerImpl() {
+  if (delegate_.get()) {
+    ui_task_runner_->PostTask(FROM_HERE,
+                              base::Bind(&Delegate::RemoveBlock, delegate_));
+  }
+}
+
+void PowerSaveBlockerImpl::InitDisplaySleepBlocker(
+    const base::WeakPtr<ui::ViewAndroid>& view_android) {
+  DCHECK(ui_task_runner_->RunsTasksOnCurrentThread());
+  if (!view_android)
+    return;
+
+  delegate_ = new Delegate(view_android, ui_task_runner_);
+  delegate_->ApplyBlock();
+}
+
+bool RegisterPowerSaveBlocker(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace content