Remove ENABLE(FILE_SYSTEM) compile-time flag.

Source/WebCore/platform/chromium/DragDataChromium.cpp

Index: Source/WebCore/platform/chromium/DragDataChromium.cpp
diff --git a/Source/WebCore/platform/chromium/DragDataChromium.cpp b/Source/WebCore/platform/chromium/DragDataChromium.cpp
index 07f9fddbd772c3991d7011412f6ea99ffbc2274d..08fe443d0b98937153b926d88fca71c7dbc14ff5 100644
--- a/Source/WebCore/platform/chromium/DragDataChromium.cpp
+++ b/Source/WebCore/platform/chromium/DragDataChromium.cpp
@@ -34,6 +34,7 @@
 #include "ClipboardMimeTypes.h"
 #include "Document.h"
 #include "DocumentFragment.h"
+#include "DraggedIsolatedFileSystem.h"
 #include "FileSystem.h"
 #include "Frame.h"
 #include "KURL.h"
@@ -44,10 +45,6 @@
 #include <public/Platform.h>
 #include <public/WebFileUtilities.h>
 
-#if ENABLE(FILE_SYSTEM)
-#include "DraggedIsolatedFileSystem.h"
-#endif
-
 namespace WebCore {
 
 static bool containsHTML(const ChromiumDataObject* dropData)
@@ -167,7 +164,6 @@ Color DragData::asColor() const
     return Color();
 }
 
-#if ENABLE(FILE_SYSTEM)
 String DragData::droppedFileSystemId() const
 {
     DraggedIsolatedFileSystem* filesystem = DraggedIsolatedFileSystem::from(m_platformDragData);
@@ -175,7 +171,5 @@ String DragData::droppedFileSystemId() const
         return String();
     return filesystem->filesystemId();
 }
-#endif
-
 
 } // namespace WebCore