docs: update Paint.setTextSize() to indicate pixel units

bug: 2321154
Change-Id: Ic71404677a8079c744b99d4848d69c6ff52089ab
diff --git a/graphics/java/android/graphics/Paint.java b/graphics/java/android/graphics/Paint.java
index cfbe672..cac9537 100644
--- a/graphics/java/android/graphics/Paint.java
+++ b/graphics/java/android/graphics/Paint.java
@@ -1404,7 +1404,7 @@
     /**
      * Return the paint's text size.
      *
-     * @return the paint's text size.
+     * @return the paint's text size in pixel units.
      */
     public float getTextSize() {
         return nGetTextSize(mNativePaint);
@@ -1415,7 +1415,7 @@
     /**
      * Set the paint's text size. This value must be > 0
      *
-     * @param textSize set the paint's text size.
+     * @param textSize set the paint's text size in pixel units.
      */
     public void setTextSize(float textSize) {
         nSetTextSize(mNativePaint, textSize);