Remove PlatformFile from WebFileUtilitiesImpl

content/child/webfileutilities_impl.h

Index: content/child/webfileutilities_impl.h
diff --git a/content/child/webfileutilities_impl.h b/content/child/webfileutilities_impl.h
index c0119b6b8e725b5e1ee93ef8d6dc1995f28933a9..46e29471b0672131c8c7ad376c73757dbcd1fccc 100644
--- a/content/child/webfileutilities_impl.h
+++ b/content/child/webfileutilities_impl.h
@@ -5,7 +5,6 @@
 #ifndef CONTENT_CHILD_WEBFILEUTILITIES_IMPL_H_
 #define CONTENT_CHILD_WEBFILEUTILITIES_IMPL_H_
 
-#include "base/platform_file.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebFileInfo.h"
 #include "third_party/WebKit/public/platform/WebFileUtilities.h"
@@ -24,9 +23,6 @@ class CONTENT_EXPORT WebFileUtilitiesImpl
   virtual blink::WebString directoryName(const blink::WebString& path);
   virtual blink::WebString baseName(const blink::WebString& path);
   virtual blink::WebURL filePathToURL(const blink::WebString& path);
-  virtual base::PlatformFile openFile(const blink::WebString& path, int mode);
-  virtual void closeFile(base::PlatformFile& handle);
-  virtual int readFromFile(base::PlatformFile handle, char* data, int length);
 
   void set_sandbox_enabled(bool sandbox_enabled) {
     sandbox_enabled_ = sandbox_enabled;