DevTools: consistently use Maybe for optional values in the protocol generator.

third_party/WebKit/Source/web/InspectorEmulationAgent.cpp

 // 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 "web/InspectorEmulationAgent.h"
 
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
 #include "core/page/Page.h"
@@ skipping 28 matching lines @@
 
 WebViewImpl* InspectorEmulationAgent::webViewImpl()
 {
     return m_webLocalFrameImpl->viewImpl();
 }
 
 void InspectorEmulationAgent::restore()
 {
     ErrorString error;
     setScriptExecutionDisabled(&error, m_state->booleanProperty(EmulationAgentState::scriptExecutionDisabled, false));
-    setTouchEmulationEnabled(&error, m_state->booleanProperty(EmulationAgentState::touchEventEmulationEnabled, false), protocol::optional(String()));
+    setTouchEmulationEnabled(&error, m_state->booleanProperty(EmulationAgentState::touchEventEmulationEnabled, false), protocol::Maybe<String>());
     String emulatedMedia;
     m_state->getString(EmulationAgentState::emulatedMedia, &emulatedMedia);
     setEmulatedMedia(&error, emulatedMedia);
 }
 
 void InspectorEmulationAgent::disable(ErrorString*)
 {
     ErrorString error;
     setScriptExecutionDisabled(&error, false);
-    setTouchEmulationEnabled(&error, false, protocol::optional(String()));
+    setTouchEmulationEnabled(&error, false, protocol::Maybe<String>());
     setEmulatedMedia(&error, String());
 }
 
 void InspectorEmulationAgent::resetPageScaleFactor(ErrorString*)
 {
     webViewImpl()->resetScaleStateImmediately();
 }
 
 void InspectorEmulationAgent::setPageScaleFactor(ErrorString*, double pageScaleFactor)
 {
     webViewImpl()->setPageScaleFactor(static_cast<float>(pageScaleFactor));
 }
 
 void InspectorEmulationAgent::setScriptExecutionDisabled(ErrorString*, bool value)
 {
     m_state->setBoolean(EmulationAgentState::scriptExecutionDisabled, value);
     webViewImpl()->devToolsEmulator()->setScriptExecutionDisabled(value);
 }
 
-void InspectorEmulationAgent::setTouchEmulationEnabled(ErrorString*, bool enabled, const OptionalValue<String>& configuration)
+void InspectorEmulationAgent::setTouchEmulationEnabled(ErrorString*, bool enabled, const Maybe<String>& configuration)
 {
     m_state->setBoolean(EmulationAgentState::touchEventEmulationEnabled, enabled);
     webViewImpl()->devToolsEmulator()->setTouchEventEmulationEnabled(enabled);
 }
 
 void InspectorEmulationAgent::setEmulatedMedia(ErrorString*, const String& media)
 {
     m_state->setString(EmulationAgentState::emulatedMedia, media);
     webViewImpl()->page()->settings().setMediaTypeOverride(media);
 }
 
 void InspectorEmulationAgent::setCPUThrottlingRate(ErrorString*, double throttlingRate)
 {
     m_client->setCPUThrottlingRate(throttlingRate);
 }
 
 DEFINE_TRACE(InspectorEmulationAgent)
 {
     visitor->trace(m_webLocalFrameImpl);
     InspectorBaseAgent::trace(visitor);
 }
 
 } // namespace blink