Move DisplayMode out of SurfaceHandler

Summary:
This diff moves DisplayMode out of SurfaceHandler, this is necessary in order to use it from react/uimanager package

changelog: [internal] internal

Reviewed By: ShikaSD

Differential Revision: D27669846

fbshipit-source-id: 274869d8f2907b1b159f51240440acece09a746f

ReactAndroid/src/main/java/com/facebook/react/fabric/jni/SurfaceHandlerBinding.cpp

@@ -17,14 +17,13 @@ SurfaceHandlerBinding::SurfaceHandlerBinding(
     : surfaceHandler_(moduleName, surfaceId) {}
 
 void SurfaceHandlerBinding::setDisplayMode(jint mode) {
-  surfaceHandler_.setDisplayMode(
-      static_cast<SurfaceHandler::DisplayMode>(mode));
+  surfaceHandler_.setDisplayMode(static_cast<DisplayMode>(mode));
 }
 
 void SurfaceHandlerBinding::start() {
   std::unique_lock<better::shared_mutex> lock(lifecycleMutex_);
 
-  surfaceHandler_.setDisplayMode(SurfaceHandler::DisplayMode::Visible);
+  surfaceHandler_.setDisplayMode(DisplayMode::Visible);
   if (surfaceHandler_.getStatus() != SurfaceHandler::Status::Running) {
     surfaceHandler_.start();
   }

ReactCommon/react/renderer/core/ReactPrimitives.h

@@ -42,5 +42,39 @@ using ComponentHandle = int64_t;
  */
 using ComponentName = char const *;
 
+/*
+ * Defines how visual side effects (views, images, text, and so on) are
+ * mounted (on not) on the screen.
+ */
+enum class DisplayMode {
+  /*
+   * The surface is running normally. All visual side-effects will be rendered
+   * on the screen.
+   */
+  Visible = 0,
+
+  /*
+   * The surface is `Suspended`. All new (committed after switching to the
+   * mode) visual side-effects will *not* be mounted on the screen (the screen
+   * will stop updating).
+   *
+   * The mode can be used for preparing a surface for possible future use.
+   * The surface will be prepared without spending computing resources
+   * on mounting, and then can be instantly mounted if needed.
+   */
+  Suspended = 1,
+
+  /*
+   * The surface is `Hidden`. All previously mounted visual side-effects
+   * will be unmounted, and all new (committed after switching to the mode)
+   * visual side-effects will *not* be mounted on the screen until the mode is
+   * switched back to `normal`.
+   *
+   * The mode can be used for temporarily freeing computing resources of
+   * off-the-screen surfaces.
+   */
+  Hidden = 2,
+};
+
 } // namespace react
 } // namespace facebook

ReactCommon/react/renderer/scheduler/SurfaceHandler.cpp

@@ -15,7 +15,6 @@ namespace facebook {
 namespace react {
 
 using Status = SurfaceHandler::Status;
-using DisplayMode = SurfaceHandler::DisplayMode;
 
 SurfaceHandler::SurfaceHandler(
     std::string const &moduleName,

ReactCommon/react/renderer/scheduler/SurfaceHandler.h

@@ -57,40 +57,6 @@ class SurfaceHandler final {
     Running = 2,
   };
 
-  /*
-   * Defines how visual side effects (views, images, text, and so on) are
-   * mounted (on not) on the screen.
-   */
-  enum class DisplayMode {
-    /*
-     * The surface is running normally. All visual side-effects will be rendered
-     * on the screen.
-     */
-    Visible = 0,
-
-    /*
-     * The surface is `Suspended`. All new (committed after switching to the
-     * mode) visual side-effects will *not* be mounted on the screen (the screen
-     * will stop updating).
-     *
-     * The mode can be used for preparing a surface for possible future use.
-     * The surface will be prepared without spending computing resources
-     * on mounting, and then can be instantly mounted if needed.
-     */
-    Suspended = 1,
-
-    /*
-     * The surface is `Hidden`. All previously mounted visual side-effects
-     * will be unmounted, and all new (committed after switching to the mode)
-     * visual side-effects will *not* be mounted on the screen until the mode is
-     * switched back to `normal`.
-     *
-     * The mode can be used for temporarily freeing computing resources of
-     * off-the-screen surfaces.
-     */
-    Hidden = 2,
-  };
-
   /*
    * Can be constructed anytime with a `moduleName` and a `surfaceId`.
    */