Add Query() support to FileRef

webkit/plugins/ppapi/ppb_file_ref_impl.h

Index: webkit/plugins/ppapi/ppb_file_ref_impl.h
diff --git a/webkit/plugins/ppapi/ppb_file_ref_impl.h b/webkit/plugins/ppapi/ppb_file_ref_impl.h
index a1856c0ce0f2607076936a43d8d2412fa9a19992..9f0cdbb70f40a7aa2e61f1844f4afc063751415f 100644
--- a/webkit/plugins/ppapi/ppb_file_ref_impl.h
+++ b/webkit/plugins/ppapi/ppb_file_ref_impl.h
@@ -8,7 +8,9 @@
 #include <string>
 
 #include "base/files/file_path.h"
+#include "base/memory/weak_ptr.h"
 #include "googleurl/src/gurl.h"
+#include "ppapi/c/pp_file_info.h"
 #include "ppapi/c/ppb_file_ref.h"
 #include "ppapi/shared_impl/ppb_file_ref_shared.h"
 #include "ppapi/shared_impl/var.h"
@@ -53,6 +55,9 @@ class WEBKIT_GLUE_EXPORT PPB_FileRef_Impl
   virtual int32_t Rename(
       PP_Resource new_file_ref,
       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
+  virtual int32_t Query(
+      PP_FileInfo* info,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
   virtual PP_Var GetAbsolutePath();
 
   PPB_FileSystem_Impl* file_system() const { return file_system_.get(); }
@@ -67,6 +72,15 @@ class WEBKIT_GLUE_EXPORT PPB_FileRef_Impl
   // Checks if file ref has file system instance and if the instance is opened.
   bool HasValidFileSystem() const;
  private:
+  void QueryCallback(PP_FileInfo* info,
+                     scoped_refptr< ::ppapi::TrackedCallback> callback,
+                     base::PlatformFileError error_code,
+                     base::PassPlatformFile passed_file);
+  void GetFileInfoCallback(PP_FileInfo* info,
+                           scoped_refptr< ::ppapi::TrackedCallback> callback,
+                           base::PlatformFileError error_code,
+                           const base::PlatformFileInfo& file_info);
+
   // Many mutation functions are allow only to non-external filesystems, This
   // function returns true if the filesystem is opened and isn't external as an
   // access check for these functions.
@@ -82,6 +96,10 @@ class WEBKIT_GLUE_EXPORT PPB_FileRef_Impl
   // return the identical string object every time it is requested.
   scoped_refptr<StringVar> external_path_var_;
 
+  // This class makes asynchronous calls to perform file operations to support
+  // Query().
+  base::WeakPtrFactory<PPB_FileRef_Impl> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(PPB_FileRef_Impl);
 };