Wake Lock API implementation (Chromium part)

content/browser/wake_lock/wake_lock_state.cc

+// 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::SetFrameLock(const RenderFrameHost* frame, bool intention) {
+  if (intention) {
+    frames_requesting_lock_.insert(frame);
+  } else {
+    RemoveFrame(frame);

[mlamouri (slow - plz ping), 2015/05/05 14:08:34]

It's fairly odd that inserting a frame is done inline while removing isn't.
Maybe you could keep it consistent?

+  }
+}
+
+void WakeLockState::RemoveFrame(const RenderFrameHost* frame) {
+  frames_requesting_lock_.erase(frame);
+}
+
+void WakeLockState::RemoveAllFrames() {
+  frames_requesting_lock_.clear();
+}
+
+bool WakeLockState::GetLockState() const {
+  return !frames_requesting_lock_.empty();
+}
+
+}  // namespace content