Clamp RunInfo::num_characters when shaping ranges with context

third_party/WebKit/Source/platform/fonts/shaping/ShapeResultTestInfo.h

 // Copyright 2015 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 ShapeResultTestInfo_h
 #define ShapeResultTestInfo_h
 
 #include "platform/fonts/shaping/HarfBuzzShaper.h"
 #include "platform/fonts/shaping/ShapeResultBloberizer.h"
 
 #include <hb.h>
 
 namespace blink {
 
 class PLATFORM_EXPORT ShapeResultTestInfo : public ShapeResult {
  public:
   unsigned NumberOfRunsForTesting() const;
   bool RunInfoForTesting(unsigned run_index,
                          unsigned& start_index,
                          unsigned& num_glyphs,
                          hb_script_t&) const;
+  bool RunInfoForTesting(unsigned run_index,
+                         unsigned& start_index,
+                         unsigned& num_characters,
+                         unsigned& num_glyphs,
+                         hb_script_t&) const;
   uint16_t GlyphForTesting(unsigned run_index, size_t glyph_index) const;
   float AdvanceForTesting(unsigned run_index, size_t glyph_index) const;
   SimpleFontData* FontDataForTesting(unsigned run_index) const;
 };
 
 class PLATFORM_EXPORT ShapeResultBloberizerTestInfo {
  public:
   static const SimpleFontData* PendingRunFontData(
       const ShapeResultBloberizer& bloberizer) {
     return bloberizer.pending_font_data_;
@@ skipping 19 matching lines @@
   }
 
   static size_t CommittedBlobCount(const ShapeResultBloberizer& bloberizer) {
     return bloberizer.blobs_.size();
   }
 };
 
 }  // namespace blink
 
 #endif  // ShapeResultTestInfo_h