Add new API to find total RAM.

Change-Id: Iad2dff3c44f471515f093e7f0d0d959528881ab9
diff --git a/core/java/android/os/Process.java b/core/java/android/os/Process.java
index 1df53e8..18fd3cb 100644
--- a/core/java/android/os/Process.java
+++ b/core/java/android/os/Process.java
@@ -897,6 +897,9 @@
     public static final native long getFreeMemory();
     
     /** @hide */
+    public static final native long getTotalMemory();
+    
+    /** @hide */
     public static final native void readProcLines(String path,
             String[] reqFields, long[] outSizes);