Add Get/SetDisplayLayout to chrome.system.display extension API

extensions/browser/api/system_display/system_display_api.h

Index: extensions/browser/api/system_display/system_display_api.h
diff --git a/extensions/browser/api/system_display/system_display_api.h b/extensions/browser/api/system_display/system_display_api.h
index d75aaa224a46477ef40e35bef0c8b3af0ca16a46..349c8406482eb13d44faf3a55f470cba7b7f6ccb 100644
--- a/extensions/browser/api/system_display/system_display_api.h
+++ b/extensions/browser/api/system_display/system_display_api.h
@@ -30,6 +30,16 @@ class SystemDisplayGetInfoFunction : public SystemDisplayFunction {
   bool RunSync() override;
 };
 
+class SystemDisplayGetDisplayLayoutFunction : public SystemDisplayFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("system.display.getDisplayLayout",
+                             SYSTEM_DISPLAY_GETDISPLAYLAYOUT);
+
+ protected:
+  ~SystemDisplayGetDisplayLayoutFunction() override {}
+  bool RunSync() override;
+};
+
 class SystemDisplaySetDisplayPropertiesFunction : public SystemDisplayFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("system.display.setDisplayProperties",
@@ -40,6 +50,16 @@ class SystemDisplaySetDisplayPropertiesFunction : public SystemDisplayFunction {
   bool RunSync() override;
 };
 
+class SystemDisplaySetDisplayLayoutFunction : public SystemDisplayFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("system.display.setDisplayLayout",
+                             SYSTEM_DISPLAY_SETDISPLAYLAYOUT);
+
+ protected:
+  ~SystemDisplaySetDisplayLayoutFunction() override {}
+  bool RunSync() override;
+};
+
 class SystemDisplayEnableUnifiedDesktopFunction : public SystemDisplayFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("system.display.enableUnifiedDesktop",