Add the ability to clear the shader disk cache.

content/public/browser/storage_partition.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 CONTENT_PUBLIC_BROWSER_STORAGE_PARTITION_H_
 #define CONTENT_PUBLIC_BROWSER_STORAGE_PARTITION_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 51 matching lines @@
     // Corresponds to quota::kStorageTypeTemporary.
     kQuotaManagedTemporaryStorage = 1 << 1,
 
     // Corresponds to quota::kStorageTypePersistent.
     kQuotaManagedPersistentStorage = 1 << 2,
 
     // Local dom storage.
     kLocalDomStorage = 1 << 3,
     kSessionDomStorage = 1 << 4,
 
+    // Local shader storage.
+    kShaderStorage = 1 << 5,
+
     kAllStorage = -1,
   };
 
   // Starts an asynchronous task that does a best-effort clear the data
   // corresonding to the given |storage_mask| inside this StoragePartition for
   // the given |storage_origin|. Note kSessionDomStorage is not cleared and the
   // mask is ignored.
   //
   // TODO(ajwong): Right now, the embedder may have some
   // URLRequestContextGetter objects that the StoragePartition does not know
   // about.  This will no longer be the case when we resolve
   // http://crbug.com/159193. Remove |request_context_getter| when that bug
   // is fixed.
   virtual void AsyncClearDataForOrigin(
       uint32 storage_mask,
       const GURL& storage_origin,
       net::URLRequestContextGetter* request_context_getter) = 0;
 
   // Similar to AsyncClearDataForOrigin(), but deletes all data out of the
   // StoragePartition rather than just the data related to this origin.
   virtual void AsyncClearData(uint32 storage_mask) = 0;
 
+  // Similar to AsyncClearDataForOrigin(), but deletes all the data out of the
+  // StoragePartion from between the given |begin| and |end| dates rather
+  // then just the data related to this origin.
+  //
+  // Note: This currently only supports the shader cache.
+  virtual void AsyncClearDataBetween(uint32 storage_mask,
+                                     const base::Time& begin,
+                                     const base::Time& end,
+                                     const base::Closure& callback) = 0;
  protected:
   virtual ~StoragePartition() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_STORAGE_PARTITION_H_