Remove PlatformFile from spell checker

chrome/renderer/spellchecker/hunspell_engine.h

Index: chrome/renderer/spellchecker/hunspell_engine.h
diff --git a/chrome/renderer/spellchecker/hunspell_engine.h b/chrome/renderer/spellchecker/hunspell_engine.h
index fbd8ac8915351c5b62edf6cfe3f37ca844e986e5..534eb87f82d2a2d01c9e0f4f51ac1e2f46ed5857 100644
--- a/chrome/renderer/spellchecker/hunspell_engine.h
+++ b/chrome/renderer/spellchecker/hunspell_engine.h
@@ -25,7 +25,7 @@ class HunspellEngine : public SpellingEngine {
   HunspellEngine();
   virtual ~HunspellEngine();
 
-  virtual void Init(base::PlatformFile file) OVERRIDE;
+  virtual void Init(base::File file) OVERRIDE;
 
   virtual bool InitializeIfNeeded() OVERRIDE;
   virtual bool IsEnabled() OVERRIDE;
@@ -46,15 +46,18 @@ class HunspellEngine : public SpellingEngine {
   // The hunspell dictionary in use.
   scoped_ptr<Hunspell> hunspell_;
 
-  base::PlatformFile file_;
+  base::File file_;
 
-  // This flags is true if we have been initialized.
+  // This flag is true if hunspell is enabled.
+  bool hunspell_enabled_;
+
+  // This flag is true if we have been initialized.
   // The value indicates whether we should request a
   // dictionary from the browser when the render view asks us to check the
   // spelling of a word.
   bool initialized_;
 
-  // This flags is true if we have requested dictionary.
+  // This flag is true if we have requested dictionary.
   bool dictionary_requested_;
 };