Clean up internal usage of g*Converter for manifest/matrix.

Change to toXml / fromXml instead.

Test: pass
Change-Id: I9326c6ea5003800108f4f9d6ac831ba815c21f0b
diff --git a/main.cpp b/main.cpp
index 5765f9b..ff689d6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -269,13 +269,13 @@
         flags = flags.disableHals().disableKernel();
     }
     std::cout << "======== Device HAL Manifest =========" << std::endl;
-    if (vm != nullptr) std::cout << gHalManifestConverter(*vm, flags);
+    if (vm != nullptr) std::cout << toXml(*vm, flags);
     std::cout << "======== Framework HAL Manifest =========" << std::endl;
-    if (fm != nullptr) std::cout << gHalManifestConverter(*fm, flags);
+    if (fm != nullptr) std::cout << toXml(*fm, flags);
     std::cout << "======== Device Compatibility Matrix =========" << std::endl;
-    if (vcm != nullptr) std::cout << gCompatibilityMatrixConverter(*vcm, flags);
+    if (vcm != nullptr) std::cout << toXml(*vcm, flags);
     std::cout << "======== Framework Compatibility Matrix =========" << std::endl;
-    if (fcm != nullptr) std::cout << gCompatibilityMatrixConverter(*fcm, flags);
+    if (fcm != nullptr) std::cout << toXml(*fcm, flags);
 
     std::cout << "======== Runtime Info =========" << std::endl;
     if (ki != nullptr) std::cout << dump(*ki, options.verbose);