Implement ScreenOrientationProvider for Chrome Android.

content/public/common/assert_matching_enums.cc

Index: content/public/common/assert_matching_enums.cc
diff --git a/content/public/common/assert_matching_enums.cc b/content/public/common/assert_matching_enums.cc
new file mode 100644
index 0000000000000000000000000000000000000000..88a1b4a8166fc8247ec8b81875c6632d8100d2cf
--- /dev/null
+++ b/content/public/common/assert_matching_enums.cc
@@ -0,0 +1,26 @@
+// Copyright 2014 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.
+
+// Use this file to assert that *_list.h enums that are meant to do the bridge
+// from Blink are valid.
+
+#include "base/macros.h"
+#include "content/public/common/screen_orientation_values.h"
+#include "third_party/WebKit/public/platform/WebScreenOrientation.h"
+
+namespace content {
+
+#define COMPILE_ASSERT_MATCHING_ENUM(expected, actual) \
+  COMPILE_ASSERT(int(expected) == int(actual), mismatching_enums)
+
+COMPILE_ASSERT_MATCHING_ENUM(blink::WebScreenOrientationPortraitPrimary,
+    PORTRAIT_PRIMARY);
+COMPILE_ASSERT_MATCHING_ENUM(blink::WebScreenOrientationLandscapePrimary,
+    LANDSCAPE_PRIMARY);
+COMPILE_ASSERT_MATCHING_ENUM(blink::WebScreenOrientationPortraitSecondary,
+    PORTRAIT_SECONDARY);
+COMPILE_ASSERT_MATCHING_ENUM(blink::WebScreenOrientationLandscapeSecondary,
+    LANDSCAPE_SECONDARY);
+
+} // namespace content