Expose Transliterator API

All the public APIs have been covered by CtsIcuTestCases.

Test: CtsIcuTestCases
Bug: 109663008
Bug: 109837373
Change-Id: Ib03c80629be727c7b17642177fa520ed808409c1
diff --git a/api/current.txt b/api/current.txt
index eb32f06..1fa8bd0 100755
--- a/api/current.txt
+++ b/api/current.txt
@@ -20276,6 +20276,51 @@
     enum_constant public static final android.icu.text.TimeZoneNames.NameType SHORT_STANDARD;
   }
 
+  public abstract class Transliterator {
+    method public static final android.icu.text.Transliterator createFromRules(java.lang.String, java.lang.String, int);
+    method public void filteredTransliterate(android.icu.text.Replaceable, android.icu.text.Transliterator.Position, boolean);
+    method public final void finishTransliteration(android.icu.text.Replaceable, android.icu.text.Transliterator.Position);
+    method public static final java.util.Enumeration<java.lang.String> getAvailableIDs();
+    method public static final java.util.Enumeration<java.lang.String> getAvailableSources();
+    method public static final java.util.Enumeration<java.lang.String> getAvailableTargets(java.lang.String);
+    method public static final java.util.Enumeration<java.lang.String> getAvailableVariants(java.lang.String, java.lang.String);
+    method public static final java.lang.String getDisplayName(java.lang.String);
+    method public static java.lang.String getDisplayName(java.lang.String, java.util.Locale);
+    method public static java.lang.String getDisplayName(java.lang.String, android.icu.util.ULocale);
+    method public android.icu.text.Transliterator[] getElements();
+    method public final android.icu.text.UnicodeFilter getFilter();
+    method public final java.lang.String getID();
+    method public static final android.icu.text.Transliterator getInstance(java.lang.String);
+    method public static android.icu.text.Transliterator getInstance(java.lang.String, int);
+    method public final android.icu.text.Transliterator getInverse();
+    method public final int getMaximumContextLength();
+    method public final android.icu.text.UnicodeSet getSourceSet();
+    method public android.icu.text.UnicodeSet getTargetSet();
+    method public void setFilter(android.icu.text.UnicodeFilter);
+    method public java.lang.String toRules(boolean);
+    method public final int transliterate(android.icu.text.Replaceable, int, int);
+    method public final void transliterate(android.icu.text.Replaceable);
+    method public final java.lang.String transliterate(java.lang.String);
+    method public final void transliterate(android.icu.text.Replaceable, android.icu.text.Transliterator.Position, java.lang.String);
+    method public final void transliterate(android.icu.text.Replaceable, android.icu.text.Transliterator.Position, int);
+    method public final void transliterate(android.icu.text.Replaceable, android.icu.text.Transliterator.Position);
+    field public static final int FORWARD = 0; // 0x0
+    field public static final int REVERSE = 1; // 0x1
+  }
+
+  public static class Transliterator.Position {
+    ctor public Transliterator.Position();
+    ctor public Transliterator.Position(int, int, int);
+    ctor public Transliterator.Position(int, int, int, int);
+    ctor public Transliterator.Position(android.icu.text.Transliterator.Position);
+    method public void set(android.icu.text.Transliterator.Position);
+    method public final void validate(int);
+    field public int contextLimit;
+    field public int contextStart;
+    field public int limit;
+    field public int start;
+  }
+
   public abstract class UCharacterIterator implements java.lang.Cloneable {
     ctor protected UCharacterIterator();
     method public java.lang.Object clone() throws java.lang.CloneNotSupportedException;