Complete removing Blink gyp files.

third_party/WebKit/Source/modules/screen_orientation/BUILD.gn

Index: third_party/WebKit/Source/modules/screen_orientation/BUILD.gn
diff --git a/third_party/WebKit/Source/modules/screen_orientation/BUILD.gn b/third_party/WebKit/Source/modules/screen_orientation/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..e06285b3778faece3ceea8f71abee7b24010bb79
--- /dev/null
+++ b/third_party/WebKit/Source/modules/screen_orientation/BUILD.gn
@@ -0,0 +1,20 @@
+# 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.
+
+import("//third_party/WebKit/Source/modules/modules.gni")
+
+blink_modules_sources("screen_orientation") {
+  sources = [
+    "LockOrientationCallback.cpp",
+    "LockOrientationCallback.h",
+    "ScreenOrientation.cpp",
+    "ScreenOrientation.h",
+    "ScreenOrientationController.cpp",
+    "ScreenOrientationController.h",
+    "ScreenOrientationDispatcher.cpp",
+    "ScreenOrientationDispatcher.h",
+    "ScreenScreenOrientation.cpp",
+    "ScreenScreenOrientation.h",
+  ]
+}