Drive: Adds clearDriveCache API to file_browser_private.

chrome/browser/chromeos/extensions/file_browser_private_api.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_PRIVATE_API_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_PRIVATE_API_H_
 
 #include <map>
 #include <string>
 #include <queue>
@@ skipping 652 matching lines @@
                 scoped_ptr<std::vector<gdata::SearchResultInfo> > result_paths);
 
   // Query for which the search is being performed.
   std::string query_;
   // Information about remote file system we will need to create file entries
   // to represent search results.
   std::string file_system_name_;
   GURL file_system_url_;
 };
 
+class ClearDriveCacheFunction : public AsyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION_NAME("fileBrowserPrivate.clearDriveCache");
+
+ protected:
+  virtual ~ClearDriveCacheFunction() {}
+
+  virtual bool RunImpl() OVERRIDE;
+};
+
 // Implements the chrome.fileBrowserPrivate.getNetworkConnectionState method.
 class GetNetworkConnectionStateFunction : public SyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION_NAME(
       "fileBrowserPrivate.getNetworkConnectionState");
 
  protected:
   virtual ~GetNetworkConnectionStateFunction() {}
 
   virtual bool RunImpl() OVERRIDE;
 };
 
 // Implements the chrome.fileBrowserPrivate.requestDirectoryRefresh method.
 class RequestDirectoryRefreshFunction : public SyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION_NAME(
       "fileBrowserPrivate.requestDirectoryRefresh");
 
  protected:
   virtual ~RequestDirectoryRefreshFunction() {}
 
   virtual bool RunImpl() OVERRIDE;
 };
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_PRIVATE_API_H_