DevTools: prepare for deleting scriptPreprocessor parameter

content/browser/devtools/protocol/page_handler.h

 // Copyright 2014 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_BROWSER_DEVTOOLS_PROTOCOL_PAGE_HANDLER_H_
 #define CONTENT_BROWSER_DEVTOOLS_PROTOCOL_PAGE_HANDLER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 27 matching lines @@
   void OnSwapCompositorFrame(const cc::CompositorFrameMetadata& frame_metadata);
   void OnVisibilityChanged(bool visible);
   void DidAttachInterstitialPage();
   void DidDetachInterstitialPage();
 
   Response Enable();
   Response Disable();
 
   Response Reload(const bool* ignoreCache,
                   const std::string* script_to_evaluate_on_load,
-                  const std::string* script_preprocessor);
+                  const std::string* script_preprocessor = NULL);
 
   Response Navigate(const std::string& url, FrameId* frame_id);
 
   using NavigationEntries = std::vector<scoped_refptr<NavigationEntry>>;
   Response GetNavigationHistory(int* current_index,
                                 NavigationEntries* entries);
 
   Response NavigateToHistoryEntry(int entry_id);
 
   Response SetGeolocationOverride(double* latitude,
@@ skipping 79 matching lines @@
   base::WeakPtrFactory<PageHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PageHandler);
 };
 
 }  // namespace page
 }  // namespace devtools
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_PROTOCOL_PAGE_HANDLER_H_