Clamp RunInfo::num_characters when shaping ranges with context

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

 // 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.
 
 #include "platform/fonts/shaping/ShapeResultTestInfo.h"
 
 #include "platform/fonts/Font.h"
 #include "platform/fonts/shaping/ShapeResultInlineHeaders.h"
 
 namespace blink {
 
 unsigned ShapeResultTestInfo::NumberOfRunsForTesting() const {
   return runs_.size();
 }
 
 bool ShapeResultTestInfo::RunInfoForTesting(unsigned run_index,
                                             unsigned& start_index,
+                                            unsigned& num_characters,
                                             unsigned& num_glyphs,
                                             hb_script_t& script) const {
   if (run_index < runs_.size() && runs_[run_index]) {
     start_index = runs_[run_index]->start_index_;
+    num_characters = runs_[run_index]->num_characters_;
     num_glyphs = runs_[run_index]->glyph_data_.size();
     script = runs_[run_index]->script_;
     return true;
   }
   return false;
 }
 
+bool ShapeResultTestInfo::RunInfoForTesting(unsigned run_index,
+                                            unsigned& start_index,
+                                            unsigned& num_glyphs,
+                                            hb_script_t& script) const {
+  unsigned num_characters;
+  return RunInfoForTesting(run_index, start_index, num_characters, num_glyphs,
+                           script);
+}
+
 uint16_t ShapeResultTestInfo::GlyphForTesting(unsigned run_index,
                                               size_t glyph_index) const {
   return runs_[run_index]->glyph_data_[glyph_index].glyph;
 }
 
 float ShapeResultTestInfo::AdvanceForTesting(unsigned run_index,
                                              size_t glyph_index) const {
   return runs_[run_index]->glyph_data_[glyph_index].advance;
 }
 
 SimpleFontData* ShapeResultTestInfo::FontDataForTesting(
     unsigned run_index) const {
   return runs_[run_index]->font_data_.Get();
 }
 
 }  // namespace blink