Add Symbols parsing.

Bug: 23762183

Test: New unit tests pass.
Change-Id: Ib67fee879120b5e82889076a0f7221dc429ac140
diff --git a/libunwindstack/Android.bp b/libunwindstack/Android.bp
index 17ede51..ee646de 100644
--- a/libunwindstack/Android.bp
+++ b/libunwindstack/Android.bp
@@ -55,6 +55,7 @@
         "Log.cpp",
         "Regs.cpp",
         "Memory.cpp",
+        "Symbols.cpp",
     ],
 
     shared_libs: [
@@ -102,6 +103,7 @@
         "tests/MemoryRangeTest.cpp",
         "tests/MemoryRemoteTest.cpp",
         "tests/RegsTest.cpp",
+        "tests/SymbolsTest.cpp",
     ],
 
     cflags: [