Prevent guest views from issuing a search for empty text.

pdf/pdf_engine.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 PDF_PDF_ENGINE_H_
 #define PDF_PDF_ENGINE_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
@@ skipping 191 matching lines @@
   virtual void PostPaint() = 0;
   virtual bool HandleDocumentLoad(const pp::URLLoader& loader) = 0;
   virtual bool HandleEvent(const pp::InputEvent& event) = 0;
   virtual uint32_t QuerySupportedPrintOutputFormats() = 0;
   virtual void PrintBegin() = 0;
   virtual pp::Resource PrintPages(
       const PP_PrintPageNumberRange_Dev* page_ranges,
       uint32_t page_range_count,
       const PP_PrintSettings_Dev& print_settings) = 0;
   virtual void PrintEnd() = 0;
-  virtual void StartFind(const char* text, bool case_sensitive) = 0;
+  virtual void StartFind(const std::string& text, bool case_sensitive) = 0;
   virtual bool SelectFindResult(bool forward) = 0;
   virtual void StopFind() = 0;
   virtual void ZoomUpdated(double new_zoom_level) = 0;
   virtual void RotateClockwise() = 0;
   virtual void RotateCounterclockwise() = 0;
   virtual std::string GetSelectedText() = 0;
   virtual std::string GetLinkAtPosition(const pp::Point& point) = 0;
   virtual bool IsSelecting() = 0;
   // Checks the permissions associated with this document.
   virtual bool HasPermission(DocumentPermission permission) const = 0;
@@ skipping 112 matching lines @@
 
   // See the definition of GetPDFPageSizeByIndex in pdf.cc for details.
   virtual bool GetPDFPageSizeByIndex(const void* pdf_buffer,
                                      int pdf_buffer_size, int page_number,
                                      double* width, double* height) = 0;
 };
 
 }  // namespace chrome_pdf
 
 #endif  // PDF_PDF_ENGINE_H_