Wake Lock API implementation (Chromium part)

content/browser/wake_lock/wake_lock_state.cc

Index: content/browser/wake_lock/wake_lock_state.cc
diff --git a/content/browser/wake_lock/wake_lock_state.cc b/content/browser/wake_lock/wake_lock_state.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1f645b1b83e250beaf2992368277d7a87f422534
--- /dev/null
+++ b/content/browser/wake_lock/wake_lock_state.cc
@@ -0,0 +1,31 @@
+// Copyright 2015 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/wake_lock/wake_lock_state.h"
+
+namespace content {
+
+WakeLockState::WakeLockState() {
+}
+
+WakeLockState::~WakeLockState() {
+}
+
+void WakeLockState::AddFrame(const RenderFrameHost* frame) {
+  frames_requesting_lock_.insert(frame);
+}
+
+void WakeLockState::RemoveFrame(const RenderFrameHost* frame) {
+  frames_requesting_lock_.erase(frame);
+}
+
+void WakeLockState::RemoveAllFrames() {
+  frames_requesting_lock_.clear();
+}
+
+bool WakeLockState::HasFrame() const {
+  return !frames_requesting_lock_.empty();
+}
+
+}  // namespace content