xhdpi

This is only a tool (aapt) change, and does not impact any current code.

Change-Id: I562063f612af919eaadba8ac4868a95ff41ac840
diff --git a/tools/aapt/AaptAssets.cpp b/tools/aapt/AaptAssets.cpp
index fc655a7..efc9619 100644
--- a/tools/aapt/AaptAssets.cpp
+++ b/tools/aapt/AaptAssets.cpp
@@ -888,6 +888,11 @@
         return true;
     }
     
+    if (strcmp(name, "xhdpi") == 0) {
+        if (out) out->density = ResTable_config::DENSITY_MEDIUM*2;
+        return true;
+    }
+    
     char* c = (char*)name;
     while (*c >= '0' && *c <= '9') {
         c++;