[CRD iOS] Send key events to the session.

remoting/client/input/text_keyboard_input_strategy.cc

+// 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 "remoting/client/input/text_keyboard_input_strategy.h"
+
+#include "remoting/client/native_device_keymap.h"
+#include "ui/events/keycodes/dom/dom_code.h"
+
+namespace remoting {
+
+TextKeyboardInputStrategy::TextKeyboardInputStrategy(
+    ChromotingSession* input_stub)
+    : input_stub_(input_stub) {}
+
+TextKeyboardInputStrategy::~TextKeyboardInputStrategy() {}
+
+// KeyboardInputStrategy
+
+void TextKeyboardInputStrategy::HandleTextEvent(const std::string& text,
+                                                uint8_t modifiers) {
+  // TODO(nicholss): Handle modifers.
+  input_stub_->SendTextEvent(text);
+}
+
+void TextKeyboardInputStrategy::HandleDeleteEvent(uint8_t modifiers) {
+  std::queue<KeyEvent> keys = ConvertDeleteEvent(modifiers);
+  while (!keys.empty()) {
+    KeyEvent key = keys.front();
+    input_stub_->SendKeyEvent(0, key.keycode, key.keydown);
+    keys.pop();
+  }
+}
+
+std::queue<KeyEvent> TextKeyboardInputStrategy::ConvertDeleteEvent(
+    uint8_t modifiers) {
+  std::queue<KeyEvent> keys;

[Yuwei, 2017/05/16 00:47:30]

I'm not sure whether we still need KeyEvent... In this case it can be

input_stub_->SendKeyEvent(0, BACKSPACE, true);
input_stub_->SendKeyEvent(0, BACKSPACE, false);

[nicholss, 2017/05/16 17:13:39]

perhaps, It might refactor out after I figure out how the meta mods will work.

+  // TODO(nicholss): Handle modifers.
+  // Key press.
+  keys.push({static_cast<uint32_t>(ui::DomCode::BACKSPACE), true});
+
+  // Key release.
+  keys.push({static_cast<uint32_t>(ui::DomCode::BACKSPACE), false});
+
+  return keys;
+}
+
+}  // namespace remoting