Rename art-cache to dalvik-cache

Change-Id: I294995066aecc29fbd739c3e9e6f60934f743064
diff --git a/src/dex2oat.cc b/src/dex2oat.cc
index 6df381e..ad751d0 100644
--- a/src/dex2oat.cc
+++ b/src/dex2oat.cc
@@ -90,7 +90,7 @@
   UsageError("");
   UsageError("  --oat-location=<oat-name>: specifies a symbolic name for the file corresponding");
   UsageError("      to the file descriptor specified by --oat-fd.");
-  UsageError("      Example: --oat-location=/data/art-cache/system@app@Calculator.apk.oat");
+  UsageError("      Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat");
   UsageError("");
   UsageError("  --oat-symbols=<file.oat>: specifies the oat output destination with full symbols.");
   UsageError("      Example: --oat-symbols=/symbols/system/framework/boot.oat");