Fix a bug in SkTextBox.

src/views/SkTextBox.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTextBox.h"
 #include "SkUtils.h"
 
@@ skipping 214 matching lines @@
     for (;;)
     {
         size_t trailing;
         len = linebreak(text, textStop, paint, marginWidth, &trailing);
         if (y + metrics.fDescent + metrics.fLeading > 0)
             canvas->drawText(text, len - trailing, x, y, paint);
         text += len;
         if (text >= textStop)
             break;
         y += scaledSpacing;
-        if (y + metrics.fAscent >= height)
+        if (y + metrics.fAscent >= fBox.fBottom)
             break;
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkTextBox::setText(const char text[], size_t len, const SkPaint& paint) {
     fText = text;
     fLen = len;
     fPaint = &paint;
 }
 
 void SkTextBox::draw(SkCanvas* canvas) {
     this->draw(canvas, fText, fLen, *fPaint);
 }
 
 int SkTextBox::countLines() const {
     return SkTextLineBreaker::CountLines(fText, fLen, *fPaint, fBox.width());
 }
 
 SkScalar SkTextBox::getTextHeight() const {
     SkScalar spacing = SkScalarMul(fPaint->getTextSize(), fSpacingMul) + fSpacingAdd;
     return this->countLines() * spacing;
 }