core/platform: Include wtf files using "wtf/foo.h" form.

Source/core/platform/chromium/FileSystemChromium.cpp

 /*
  * Copyright (c) 2008, 2009, Google Inc. All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  * 
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #include "config.h"
 #include "core/platform/FileSystem.h"
 
 #include "core/platform/FileMetadata.h"
 #include "core/platform/NotImplemented.h"
 
 #include "public/platform/Platform.h"
 #include "public/platform/WebFileInfo.h"
 #include "public/platform/WebFileUtilities.h"
-#include <wtf/text/WTFString.h>
+#include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 bool deleteFile(const String& path)
 {
     return WebKit::Platform::current()->fileUtilities()->deleteFile(path);
 }
 
 bool deleteEmptyDirectory(const String& path)
 {
@@ skipping 73 matching lines @@
 {
     return WebKit::Platform::current()->fileUtilities()->readFromFile(handle, data, length);
 }
 
 int writeToFile(PlatformFileHandle handle, const char* data, int length)
 {
     return WebKit::Platform::current()->fileUtilities()->writeToFile(handle, data, length);
 }
 
 } // namespace WebCore