Move GuestView layer in browser to components

extensions/common/guest_view/guest_view_constants.h

-// 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.
-
-// Constants used for the WebView API.
-
-#ifndef EXTENSIONS_COMMON_GUEST_VIEW_GUEST_VIEW_CONSTANTS_H_
-#define EXTENSIONS_COMMON_GUEST_VIEW_GUEST_VIEW_CONSTANTS_H_
-
-namespace guestview {
-
-// Sizing attributes/parameters.
-extern const char kAttributeAutoSize[];
-extern const char kAttributeMaxHeight[];
-extern const char kAttributeMaxWidth[];
-extern const char kAttributeMinHeight[];
-extern const char kAttributeMinWidth[];
-extern const char kElementWidth[];
-extern const char kElementHeight[];
-extern const char kElementSizeIsLogical[];
-
-// Events.
-extern const char kEventResize[];
-
-// Parameters/properties on events.
-extern const char kCode[];
-extern const char kContentWindowID[];
-extern const char kID[];
-extern const char kIsTopLevel[];
-extern const char kNewWidth[];
-extern const char kNewHeight[];
-extern const char kOldWidth[];
-extern const char kOldHeight[];
-extern const char kReason[];
-extern const char kUrl[];
-extern const char kUserGesture[];
-
-// Initialization parameters.
-extern const char kParameterApi[];
-extern const char kParameterInstanceId[];
-
-// Other.
-extern const char kGuestViewManagerKeyName[];
-extern const int kInstanceIDNone;
-extern const int kDefaultWidth;
-extern const int kDefaultHeight;
-
-}  // namespace guestview
-
-#endif  // EXTENSIONS_COMMON_GUEST_VIEW_GUEST_VIEW_CONSTANTS_H_