[fsp] Remove the create flag from the file opening operation.

chrome/common/extensions/api/file_system_provider.idl

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Use the <code>chrome.fileSystemProvider</code> API to create file systems,
 // that can be accessible from the file manager on Chrome OS.
 [platforms=("chromeos"),
  implemented_in="chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.h"]
 namespace fileSystemProvider {
   // Error codes used by providing extensions in response to requests. For
@@ skipping 72 matching lines @@
     long requestId;
     DOMString directoryPath;
   };
 
   // Options for the <code>onOpenFileRequested()</code> event.
   dictionary OpenFileRequestedOptions {
     DOMString fileSystemId;
     long requestId;
     DOMString filePath;
     OpenFileMode mode;
-    boolean create;
   };
 
   // Options for the <code>onCloseFileRequested()</code> event.
   dictionary CloseFileRequestedOptions {
     DOMString fileSystemId;
     long requestId;
     long openRequestId;
   };
 
   // Options for the <code>onReadFileRequested()</code> event.
@@ skipping 84 matching lines @@
 
     // Raised when contents of a directory at <code>directoryPath</code> are
     // requested. The results should be returned in chunks by calling the <code>
     // successCallback</code> several times. In case of an error, <code>
     // errorCallback</code> must be called.
     [maxListeners=1] static void onReadDirectoryRequested(
         ReadDirectoryRequestedOptions options,
         EntriesCallback successCallback,
         ProviderErrorCallback errorCallback);
 
-    // Raised when opening a file at <code>filePath</code> is requested.
-    // If <code>create</code> is set to <code>true</code> and the file does not
-    // exist, then it should be created.
+    // Raised when opening a file at <code>filePath</code> is requested. If the
+    // file does not exist, then the operation must fail.
     [maxListeners=1] static void onOpenFileRequested(
         OpenFileRequestedOptions options,
         ProviderSuccessCallback successCallback,
         ProviderErrorCallback errorCallback);
 
     // Raised when opening a file previously opened with <code>openRequestId
     // </code> is requested to be closed.
     [maxListeners=1] static void onCloseFileRequested(
         CloseFileRequestedOptions options,
         ProviderSuccessCallback successCallback,
         ProviderErrorCallback errorCallback);
 
     // Raised when contents of a file opened previously with <code>openRequestId
     // </code>. The results should be returned in chunks by calling <code>
     // successCallback</code> several times. In case of an error, <code>
     // errorCallback</code> must be called.
     [maxListeners=1] static void onReadFileRequested(
         ReadFileRequestedOptions options,
         FileDataCallback successCallback,
         ProviderErrorCallback errorCallback);
   };
 };