[Media controls] Add rotate-to-fullscreen gesture behind flag

third_party/WebKit/Source/modules/BUILD.gn

 # 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.
 
 import("//build/split_static_library.gni")
 import("//build/config/chromecast_build.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/v8.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
@@ skipping 256 matching lines @@
     "fetch/RequestTest.cpp",
     "fetch/ResponseTest.cpp",
     "filesystem/DOMFileSystemBaseTest.cpp",
     "indexeddb/IDBKeyPathTest.cpp",
     "indexeddb/IDBRequestTest.cpp",
     "indexeddb/IDBTransactionTest.cpp",
     "indexeddb/MockWebIDBDatabase.cpp",
     "indexeddb/MockWebIDBDatabase.h",
     "media_controls/MediaControlsImplTest.cpp",
     "media_controls/MediaControlsOrientationLockDelegateTest.cpp",
+    "media_controls/MediaControlsRotateToFullscreenDelegateTest.cpp",
     "mediastream/MediaConstraintsTest.cpp",
     "notifications/NotificationDataTest.cpp",
     "notifications/NotificationImageLoaderTest.cpp",
     "notifications/NotificationResourcesLoaderTest.cpp",
     "payments/AbortTest.cpp",
     "payments/CanMakePaymentTest.cpp",
     "payments/CompleteTest.cpp",
     "payments/OnPaymentResponseTest.cpp",
     "payments/PaymentAddressTest.cpp",
     "payments/PaymentAppRequestConversionTest.cpp",
@@ skipping 37 matching lines @@
     ":modules_testing",
     "//components/payments/mojom:mojom_blink",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/WebKit/Source/core",
     "//third_party/WebKit/Source/platform/wtf",
     "//v8",
   ]
 }