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Source/platform/fonts/shaping/SimpleShaper.cpp

Index: Source/platform/fonts/shaping/SimpleShaper.cpp
diff --git a/Source/platform/fonts/shaping/SimpleShaper.cpp b/Source/platform/fonts/shaping/SimpleShaper.cpp
index 431e5a43a6aaf9dc3488fa367f25448550a5bc66..babd006dfd3be334b66895644beeb6fac72ae0b4 100644
--- a/Source/platform/fonts/shaping/SimpleShaper.cpp
+++ b/Source/platform/fonts/shaping/SimpleShaper.cpp
@@ -195,14 +195,14 @@ unsigned SimpleShaper::advanceInternal(TextIterator& textIterator, GlyphBuffer*
     return consumedCharacters;
 }
 
-unsigned SimpleShaper::advance(unsigned offset, GlyphBuffer* glyphBuffer)
+unsigned SimpleShaper::advance(int offset, GlyphBuffer* glyphBuffer)
 {
-    unsigned length = m_textRun.length();
+    int length = m_textRun.length();
 
     if (offset > length)
         offset = length;
 
-    if (m_currentCharacter >= offset)
+    if (m_currentCharacter >= static_cast<unsigned>(offset))
         return 0;
 
     if (m_textRun.is8Bit()) {