Fix CTS test.
Bug #3345445

Change-Id: I3e9fa6002d173e6c9182ee5798420829e4bd2e30
diff --git a/graphics/java/android/graphics/Shader.java b/graphics/java/android/graphics/Shader.java
index 3acf1ea..43758e7 100644
--- a/graphics/java/android/graphics/Shader.java
+++ b/graphics/java/android/graphics/Shader.java
@@ -66,7 +66,7 @@
     public boolean getLocalMatrix(Matrix localM) {
         if (mLocalMatrix != null) {
             localM.set(mLocalMatrix);
-            return true;
+            return !mLocalMatrix.isIdentity();
         }
         return false;
     }