Remove legacy SELECT popup code.

Source/web/web.gypi

Index: Source/web/web.gypi
diff --git a/Source/web/web.gypi b/Source/web/web.gypi
index 9fc3898217a3567669298014dda5d7065c342c9f..1caf0a307896516ef71ec1292b07416fd6a09dd2 100644
--- a/Source/web/web.gypi
+++ b/Source/web/web.gypi
@@ -71,13 +71,6 @@
       'PageWidgetDelegate.h',
       'PluginPlaceholderImpl.cpp',
       'PluginPlaceholderImpl.h',
-      'PopupContainer.cpp',
-      'PopupContainer.h',
-      'PopupContainerClient.h',
-      'PopupListBox.cpp',
-      'PopupListBox.h',
-      'PopupMenuChromium.cpp',
-      'PopupMenuChromium.h',
       'PopupMenuImpl.cpp',
       'PopupMenuImpl.h',
       'PrerendererClientImpl.cpp',
@@ -209,8 +202,6 @@
       'WebPluginDocument.cpp',
       'WebPluginLoadObserver.cpp',
       'WebPluginLoadObserver.h',
-      'WebPopupMenuImpl.cpp',
-      'WebPopupMenuImpl.h',
       'WebRange.cpp',
       'WebRemoteFrameImpl.cpp',
       'WebRemoteFrameImpl.h',
@@ -270,8 +261,6 @@
       'ExternalPopupMenuTest.cpp',
       'PageOverlayTest.cpp',
       'PluginPlaceholderImplTest.cpp',
-      'PopupContainerTest.cpp',
-      'PopupMenuTest.cpp',
       'WebDragDataTest.cpp',
       'WebNodeTest.cpp',
       # FIXME: Move the tests from web/tests/ to appropriate places.