Add endian parameter to the get/set functions in ByteData.

runtime/tests/vm/dart/byte_array_test.dart

Index: runtime/tests/vm/dart/byte_array_test.dart
===================================================================
--- runtime/tests/vm/dart/byte_array_test.dart	(revision 21661)
+++ runtime/tests/vm/dart/byte_array_test.dart	(working copy)
@@ -991,7 +991,7 @@
     for (int i = 0; i < array.length; ++i) {
       array[i] = 0xFF - i;
     }
-    byte_array.setUint32(0, 0xBF800000);
+    byte_array.setUint32(0, 0xBF800000, Endianness.LITTLE_ENDIAN);
     Expect.equals(0, byte_array.getInt8(0));
     Expect.equals(0, byte_array.getInt8(1));
     Expect.equals(-128, byte_array.getInt8(2));
@@ -1009,18 +1009,22 @@
     Expect.equals(0xF9, byte_array.getUint8(6));
     Expect.equals(0xF8, byte_array.getUint8(7));
     Expect.equals(0, byte_array.getInt16(0));
-    Expect.equals(-16512, byte_array.getInt16(2));
-    Expect.equals(-1285, byte_array.getInt16(4));
-    Expect.equals(-1799, byte_array.getInt16(6));
-    Expect.equals(0x0000, byte_array.getUint16(0));
-    Expect.equals(0xBF80, byte_array.getUint16(2));
-    Expect.equals(0xFAFB, byte_array.getUint16(4));
-    Expect.equals(0xF8F9, byte_array.getUint16(6));
-    Expect.equals(-1082130432, byte_array.getInt32(0));
-    Expect.equals(0xBF800000, byte_array.getUint32(0));
-    Expect.equals(-506097523945897984, byte_array.getInt64(0));
-    Expect.equals(0xF8F9FAFBBF800000, byte_array.getUint64(0));
-    Expect.equals(-1.0, byte_array.getFloat32(0));
+    Expect.equals(-16512, byte_array.getInt16(2, Endianness.LITTLE_ENDIAN));
+    Expect.equals(-1285, byte_array.getInt16(4, Endianness.LITTLE_ENDIAN));
+    Expect.equals(-1799, byte_array.getInt16(6, Endianness.LITTLE_ENDIAN));
+    Expect.equals(0x0000, byte_array.getUint16(0, Endianness.LITTLE_ENDIAN));
+    Expect.equals(0xBF80, byte_array.getUint16(2, Endianness.LITTLE_ENDIAN));
+    Expect.equals(0xFAFB, byte_array.getUint16(4, Endianness.LITTLE_ENDIAN));
+    Expect.equals(0xF8F9, byte_array.getUint16(6, Endianness.LITTLE_ENDIAN));
+    Expect.equals(-1082130432,
+                  byte_array.getInt32(0, Endianness.LITTLE_ENDIAN));
+    Expect.equals(0xBF800000,
+                  byte_array.getUint32(0, Endianness.LITTLE_ENDIAN));
+    Expect.equals(-506097523945897984,
+                  byte_array.getInt64(0, Endianness.LITTLE_ENDIAN));
+    Expect.equals(0xF8F9FAFBBF800000,
+                  byte_array.getUint64(0, Endianness.LITTLE_ENDIAN));
+    Expect.equals(-1.0, byte_array.getFloat32(0, Endianness.LITTLE_ENDIAN));
     // TODO: byte_array.getFloat64(0)
   }