Keyboard Lock Host implementation

components/keyboard_lock/key_hook_activator_collection.cc

Index: components/keyboard_lock/key_hook_activator_collection.cc
diff --git a/components/keyboard_lock/key_hook_activator_collection.cc b/components/keyboard_lock/key_hook_activator_collection.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f677860d3ab89faee00fe57138be7e0fbd34916f
--- /dev/null
+++ b/components/keyboard_lock/key_hook_activator_collection.cc
@@ -0,0 +1,38 @@
+// Copyright 2017 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 "components/keyboard_lock/key_hook_activator_collection.h"
+
+#include <utility>
+
+namespace keyboard_lock {
+
+KeyHookActivatorCollection::KeyHookActivatorCollection() = default;
+KeyHookActivatorCollection::~KeyHookActivatorCollection() = default;
+
+KeyHookActivator* KeyHookActivatorCollection::Find(
+    const content::WebContents* contents) const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  auto it = activators_.find(contents);
+  if (it == activators_.end()) {
+    return nullptr;
+  }
+  return it->second.get();
+}
+
+void KeyHookActivatorCollection::Insert(
+    const content::WebContents* contents,
+    std::unique_ptr<KeyHookActivator> key_hook) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  auto result = activators_.insert(
+      std::make_pair(contents, std::move(key_hook)));
+  DCHECK(result.second);
+}
+
+void KeyHookActivatorCollection::Erase(const content::WebContents* contents) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  activators_.erase(contents);
+}
+
+}  // namespace keyboard_lock