diff --git a/atom/browser/web_view_constants.cc b/atom/browser/web_view_constants.cc
deleted file mode 100644
index 6f8314cbcf36..000000000000
--- a/atom/browser/web_view_constants.cc
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright (c) 2015 GitHub, Inc.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#include "atom/browser/web_view_constants.h"
-
-namespace atom {
-
-namespace web_view {
-
-const char kPreloadUrl[] = "preloadUrl";
-const char kNodeIntegration[] = "nodeIntegration";
-const char kPlugins[] = "plugins";
-const char kDisableWebSecurity[] = "disableWebSecurity";
-const char kPartitionId[] = "partitionId";
-
-const int kDefaultWidth = 300;
-const int kDefaultHeight = 300;
-
-const char kWebViewInfoKeyName[] = "web_view_info";
-
-}  // namespace web_view
-
-}  // namespace atom
diff --git a/atom/browser/web_view_constants.h b/atom/browser/web_view_constants.h
deleted file mode 100644
index 0831bdbdf1d4..000000000000
--- a/atom/browser/web_view_constants.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright (c) 2015 GitHub, Inc.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#ifndef ATOM_BROWSER_WEB_VIEW_CONSTANTS_H_
-#define ATOM_BROWSER_WEB_VIEW_CONSTANTS_H_
-
-namespace atom {
-
-namespace web_view {
-
-extern const char kPreloadUrl[];
-extern const char kNodeIntegration[];
-extern const char kPlugins[];
-extern const char kDisableWebSecurity[];
-extern const char kPartitionId[];
-
-extern const int kDefaultWidth;
-extern const int kDefaultHeight;
-
-extern const char kWebViewInfoKeyName[];
-
-}  // namespace web_view
-
-}  // namespace atom
-
-#endif  // ATOM_BROWSER_WEB_VIEW_CONSTANTS_H_
diff --git a/atom/browser/web_view_guest_delegate.cc b/atom/browser/web_view_guest_delegate.cc
index a954cea8dc02..8e1810c4a39b 100644
--- a/atom/browser/web_view_guest_delegate.cc
+++ b/atom/browser/web_view_guest_delegate.cc
@@ -5,7 +5,6 @@
 #include "atom/browser/web_view_guest_delegate.h"
 
 #include "atom/browser/api/atom_api_web_contents.h"
-#include "atom/browser/web_view_constants.h"
 #include "atom/common/native_mate_converters/gurl_converter.h"
 #include "content/public/browser/guest_host.h"
 #include "content/public/browser/render_frame_host.h"
@@ -14,6 +13,13 @@
 
 namespace atom {
 
+namespace {
+
+const int kDefaultWidth = 300;
+const int kDefaultHeight = 300;
+
+}  // namespace
+
 WebViewGuestDelegate::WebViewGuestDelegate()
     : guest_opaque_(true),
       guest_host_(nullptr),
@@ -172,7 +178,7 @@ gfx::Size WebViewGuestDelegate::GetDefaultSize() const {
     return embedder_web_contents_->GetRenderWidgetHostView()
                                  ->GetVisibleViewportSize();
   } else {
-    return gfx::Size(web_view::kDefaultWidth, web_view::kDefaultHeight);
+    return gfx::Size(kDefaultWidth, kDefaultHeight);
   }
 }
 
diff --git a/filenames.gypi b/filenames.gypi
index 78a8e17f2f99..461c812753c9 100644
--- a/filenames.gypi
+++ b/filenames.gypi
@@ -230,8 +230,6 @@
       'atom/browser/web_contents_preferences.h',
       'atom/browser/web_dialog_helper.cc',
       'atom/browser/web_dialog_helper.h',
-      'atom/browser/web_view_constants.cc',
-      'atom/browser/web_view_constants.h',
       'atom/browser/web_view_guest_delegate.cc',
       'atom/browser/web_view_guest_delegate.h',
       'atom/browser/web_view_manager.cc',