Hide handwriting and voice buttons when keyboard is in restricted state

chrome/browser/chromeos/input_method/input_method_manager_impl.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 "chrome/browser/chromeos/input_method/input_method_manager_impl.h"
 
 #include <stdint.h>
 
 #include <algorithm>  // std::find
 #include <memory>
@@ skipping 911 matching lines @@
 
 InputMethodManagerImpl::InputMethodManagerImpl(
     std::unique_ptr<InputMethodDelegate> delegate,
     bool enable_extension_loading)
     : delegate_(std::move(delegate)),
       ui_session_(STATE_LOGIN_SCREEN),
       state_(NULL),
       util_(delegate_.get()),
       component_extension_ime_manager_(new ComponentExtensionIMEManager()),
       enable_extension_loading_(enable_extension_loading),
-      is_ime_menu_activated_(false) {
+      is_ime_menu_activated_(false),
+      features_restricted_state_(FeaturesRestricted::NONE) {
   if (IsRunningAsSystemCompositor()) {
 #if defined(USE_OZONE)
     keyboard_ = base::MakeUnique<ImeKeyboardMus>(
         g_browser_process->platform_part()->GetInputDeviceControllerClient());
 #else
     keyboard_.reset(ImeKeyboard::Create());
 #endif
   } else {
     keyboard_.reset(new FakeImeKeyboard());
   }
@@ skipping 395 matching lines @@
   keyboard::KeyboardController* keyboard_controller =
       keyboard::KeyboardController::GetInstance();
   if (keyboard_controller)
     keyboard_controller->Reload();
 }
 
 bool InputMethodManagerImpl::IsEmojiHandwritingVoiceOnImeMenuEnabled() {
   return base::FeatureList::IsEnabled(features::kEHVInputOnImeMenu);
 }
 
+void InputMethodManagerImpl::SetFeaturesRestricted(FeaturesRestricted feature,
+                                                   bool restricted) {
+  if (feature == FeaturesRestricted::NONE) {
+    features_restricted_state_ =
+        restricted ? FeaturesRestricted::NONE : (~FeaturesRestricted::NONE);

[James Cook, 2017/06/27 16:31:11]

nit: () not needed, here or below

[Azure Wei, 2017/06/29 16:37:02]

Done.

+  } else {
+    if (restricted)
+      features_restricted_state_ |= feature;
+    else
+      features_restricted_state_ &= (~feature);
+  }
+}
+
+bool InputMethodManagerImpl::GetFeaturesRestricted(
+    FeaturesRestricted feature) const {
+  if (feature == FeaturesRestricted::NONE)
+    return features_restricted_state_ == FeaturesRestricted::NONE;
+  return (features_restricted_state_ & feature);
+}
+
 }  // namespace input_method
 }  // namespace chromeos