[DevTools] Implement screen orientation override.

Source/web/WebDevToolsAgentImpl.cpp

Index: Source/web/WebDevToolsAgentImpl.cpp
diff --git a/Source/web/WebDevToolsAgentImpl.cpp b/Source/web/WebDevToolsAgentImpl.cpp
index 233cd5a33eb816554d94eea5c55dce304a388950..c00ae1fdb5d26be9c1e308a9497752bd6b810523 100644
--- a/Source/web/WebDevToolsAgentImpl.cpp
+++ b/Source/web/WebDevToolsAgentImpl.cpp
@@ -77,6 +77,7 @@
 #include "modules/device_orientation/DeviceOrientationInspectorAgent.h"
 #include "modules/filesystem/InspectorFileSystemAgent.h"
 #include "modules/indexeddb/InspectorIndexedDBAgent.h"
+#include "modules/screen_orientation/ScreenOrientationInspectorAgent.h"
 #include "modules/storage/InspectorDOMStorageAgent.h"
 #include "modules/webdatabase/InspectorDatabaseAgent.h"
 #include "platform/JSONValues.h"
@@ -365,6 +366,8 @@ WebDevToolsAgentImpl::WebDevToolsAgentImpl(
 
     m_agents.append(workerAgentPtr.release());
     m_agents.append(pageConsoleAgentPtr.release());
+
+    m_agents.append(ScreenOrientationInspectorAgent::create(*m_webLocalFrameImpl->frame()));
 }
 
 WebDevToolsAgentImpl::~WebDevToolsAgentImpl()