Mojo-ify implementation of screen orientation locking/unlocking.

third_party/WebKit/public/platform/modules/screen_orientation/WebScreenOrientationEnumTraits.h

+// Copyright 2016 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.
+
+#ifndef WebScreenOrientationEnumTraits_h
+#define WebScreenOrientationEnumTraits_h
+
+#include "third_party/WebKit/public/platform/modules/screen_orientation/WebScreenOrientationLockType.h"
+#include "third_party/WebKit/public/platform/modules/screen_orientation/screen_orientation.mojom-shared.h"
+
+namespace mojo {
+
+template <>
+struct EnumTraits<::blink::mojom::ScreenOrientationLockType,

[blundell, 2016/10/25 16:09:27]

Why not do this for ScreenOrientationLockResult as well? That should save you
having to convert in screen_orientation_dispatcher.cc, right?

[lunalu1, 2016/11/03 23:15:26]

This is because before OnLockSuccess and OnLockError were handled separately and
there wasn't a enum type that had both LockSuccess and LockError's so we will
just leave it the way it is for now. 

+                  ::blink::WebScreenOrientationLockType> {
+  static ::blink::mojom::ScreenOrientationLockType ToMojom(
+      ::blink::WebScreenOrientationLockType lockType) {
+    switch (lockType) {
+      case ::blink::WebScreenOrientationLockDefault:
+        return ::blink::mojom::ScreenOrientationLockType::DEFAULT;
+      case ::blink::WebScreenOrientationLockPortraitPrimary:
+        return ::blink::mojom::ScreenOrientationLockType::PORTRAIT_PRIMARY;
+      case ::blink::WebScreenOrientationLockPortraitSecondary:
+        return ::blink::mojom::ScreenOrientationLockType::PORTRAIT_SECONDARY;
+      case ::blink::WebScreenOrientationLockLandscapePrimary:
+        return ::blink::mojom::ScreenOrientationLockType::LANDSCAPE_PRIMARY;
+      case ::blink::WebScreenOrientationLockLandscapeSecondary:
+        return ::blink::mojom::ScreenOrientationLockType::LANDSCAPE_SECONDARY;
+      case ::blink::WebScreenOrientationLockAny:
+        return ::blink::mojom::ScreenOrientationLockType::ANY;
+      case ::blink::WebScreenOrientationLockLandscape:
+        return ::blink::mojom::ScreenOrientationLockType::LANDSCAPE;
+      case ::blink::WebScreenOrientationLockPortrait:
+        return ::blink::mojom::ScreenOrientationLockType::PORTRAIT;
+      case ::blink::WebScreenOrientationLockNatural:
+        return ::blink::mojom::ScreenOrientationLockType::NATURAL;
+    }
+    NOTREACHED();
+    return ::blink::mojom::ScreenOrientationLockType::DEFAULT;
+  }
+
+  static bool FromMojom(::blink::mojom::ScreenOrientationLockType lockType,
+                        ::blink::WebScreenOrientationLockType* out) {
+    switch (lockType) {
+      case ::blink::mojom::ScreenOrientationLockType::DEFAULT:
+        *out = ::blink::WebScreenOrientationLockDefault;
+        return true;
+      case ::blink::mojom::ScreenOrientationLockType::PORTRAIT_PRIMARY:
+        *out = ::blink::WebScreenOrientationLockPortraitPrimary;
+        return true;
+      case ::blink::mojom::ScreenOrientationLockType::PORTRAIT_SECONDARY:
+        *out = ::blink::WebScreenOrientationLockPortraitSecondary;
+        return true;
+      case ::blink::mojom::ScreenOrientationLockType::LANDSCAPE_PRIMARY:
+        *out = ::blink::WebScreenOrientationLockLandscapePrimary;
+        return true;
+      case ::blink::mojom::ScreenOrientationLockType::LANDSCAPE_SECONDARY:
+        *out = ::blink::WebScreenOrientationLockLandscapeSecondary;
+        return true;
+      case ::blink::mojom::ScreenOrientationLockType::ANY:
+        *out = ::blink::WebScreenOrientationLockAny;
+        return true;
+      case ::blink::mojom::ScreenOrientationLockType::LANDSCAPE:
+        *out = ::blink::WebScreenOrientationLockLandscape;
+        return true;
+      case ::blink::mojom::ScreenOrientationLockType::PORTRAIT:
+        *out = ::blink::WebScreenOrientationLockPortrait;
+        return true;
+      case ::blink::mojom::ScreenOrientationLockType::NATURAL:
+        *out = ::blink::WebScreenOrientationLockNatural;
+        return true;
+    }
+    NOTREACHED();
+    return false;
+  }
+};
+
+}  // namespace mojo
+
+#endif  // WebScreenOrientationEnumTraits_h