mediaresourcemanager: verify the input calling pid

Bug: 26830615
Change-Id: I2e9c579b3bdd86a90b08fa161206d32527390bb5
diff --git a/services/mediaresourcemanager/test/ResourceManagerService_test.cpp b/services/mediaresourcemanager/test/ResourceManagerService_test.cpp
index df49ddc..cffedc6 100644
--- a/services/mediaresourcemanager/test/ResourceManagerService_test.cpp
+++ b/services/mediaresourcemanager/test/ResourceManagerService_test.cpp
@@ -44,6 +44,10 @@
         return true;
     }
 
+    virtual bool isValidPid(int /* pid */) {
+        return true;
+    }
+
 private:
     DISALLOW_EVIL_CONSTRUCTORS(TestProcessInfo);
 };