Messaging: Language cleanup

No unnecessary boxing, enhanced for loops, redundant checks and throws,
imports (removal, reordering), possible void returns

Change-Id: I7a8e1b2007e3b0906e01b41785c518d02c2f3fab

src/android/support/v7/mms/pdu/Base64.java

@@ -153,9 +153,9 @@ public class Base64 {
         byte[] groomedData = new byte[data.length];
         int bytesCopied = 0;
 
-        for (int i = 0; i < data.length; i++) {
-            if (isBase64(data[i])) {
-                groomedData[bytesCopied++] = data[i];
+        for (byte datum : data) {
+            if (isBase64(datum)) {
+                groomedData[bytesCopied++] = datum;
             }
         }
 

src/android/support/v7/mms/pdu/PduHeaders.java

@@ -628,8 +628,8 @@ public class PduHeaders {
         }
 
         ArrayList<EncodedStringValue> list = new ArrayList<>();
-        for (int i = 0; i < value.length; i++) {
-            list.add(value[i]);
+        for (EncodedStringValue encodedStringValue : value) {
+            list.add(encodedStringValue);
         }
         mHeaderMap.put(field, list);
     }