Address HPackedSwitch issues raised after merge

There were some stylistic comments about the merged files.  Fix those.

Add a test that PackedSwitch can be removed by DCE.

Change-Id: Idf45833956e9b58051f942a52b06a1e416606e2e
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
diff --git a/compiler/optimizing/builder.cc b/compiler/optimizing/builder.cc
index e19e74f..7ae405a 100644
--- a/compiler/optimizing/builder.cc
+++ b/compiler/optimizing/builder.cc
@@ -1693,8 +1693,14 @@
   } else {
     // Chained cmp-and-branch, starting from starting_key.
     for (size_t i = 1; i <= num_entries; i++) {
-      BuildSwitchCaseHelper(instruction, i, i == num_entries, table, value,
-                            starting_key + i - 1, table.GetEntryAt(i), dex_pc);
+      BuildSwitchCaseHelper(instruction,
+                            i,
+                            i == num_entries,
+                            table,
+                            value,
+                            starting_key + i - 1,
+                            table.GetEntryAt(i),
+                            dex_pc);
     }
   }
 }