Apply first-line transform-text style

third_party/WebKit/Source/core/layout/LayoutText.cpp

Index: third_party/WebKit/Source/core/layout/LayoutText.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutText.cpp b/third_party/WebKit/Source/core/layout/LayoutText.cpp
index a6d33292f4d42ba5d7b67eaa06d11309ddbcdacb..accd371a13741e984dee2709c023f2af743922d5 100644
--- a/third_party/WebKit/Source/core/layout/LayoutText.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutText.cpp
@@ -1404,6 +1404,29 @@ void applyTextTransform(const ComputedStyle* style, String& text, UChar previous
     }
 }
 
+void LayoutText::applyTextTransformFromTo(int from, int len, const ComputedStyle* style)
+{
+    if (!style)
+        return;
+
+    String textToCapitalize;
+    switch (style->textTransform()) {
+    case TTNONE:

[rhogan, 2016/09/05 18:00:33]

I decided to not try and adapt the previous function to fit a from/to replace
model. The duplication seems the lesser of two evils.

[eae, 2016/09/05 20:53:34]

I agree. Thanks for the clarification.

+        break;
+    case CAPITALIZE:
+        textToCapitalize = m_text.substring(from, len);
+        makeCapitalized(&textToCapitalize, previousCharacter());
+        m_text = m_text.replace(from, len, textToCapitalize);
+        break;
+    case UPPERCASE:
+        m_text = m_text.replace(from, len, m_text.substring(from, len).upper(style->locale()));
+        break;
+    case LOWERCASE:
+        m_text = m_text.replace(from, len, m_text.substring(from, len).lower(style->locale()));
+        break;
+    }
+}
+
 void LayoutText::setTextInternal(PassRefPtr<StringImpl> text)
 {
     ASSERT(text);