IVGCVSW-2454 Refactor ArmNN to support pluggable backends from a separate
code base

 * Made the virtual functions in ILayerSupport.hpp pure
 * Created a LayerSupportBase class with the default implementation of
   the interface
 * Made the backend layer support classes inherit from the base
   class, instead of directly from the interface
 * Refactored the profiler and the profiling event classes to use
   the BackendId instead of the Compute
 * Implemented a proper MemCopy support method
 * Changed Compute to BackendId in the profiling API and objects
 * Removed static references to pluggable backends

!android-nn-driver:492

Change-Id: Id6332b5f48c980819e0a09adc818d1effd057296
diff --git a/src/backends/reference/RefLayerSupport.cpp b/src/backends/reference/RefLayerSupport.cpp
index 56d2e4c..61a34f9 100644
--- a/src/backends/reference/RefLayerSupport.cpp
+++ b/src/backends/reference/RefLayerSupport.cpp
@@ -390,6 +390,17 @@
                                      &TrueFunc<>);
 }
 
+bool RefLayerSupport::IsMemCopySupported(const TensorInfo &input,
+                                         const TensorInfo &output,
+                                         Optional<std::string &> reasonIfUnsupported) const
+{
+    ignore_unused(output);
+    return IsSupportedForDataTypeRef(reasonIfUnsupported,
+                                     input.GetDataType(),
+                                     &TrueFunc<>,
+                                     &TrueFunc<>);
+}
+
 bool RefLayerSupport::IsMinimumSupported(const TensorInfo& input0,
                                          const TensorInfo& input1,
                                          const TensorInfo& output,
@@ -478,8 +489,10 @@
 }
 
 bool RefLayerSupport::IsReshapeSupported(const TensorInfo& input,
+                                         const ReshapeDescriptor& descriptor,
                                          Optional<std::string&> reasonIfUnsupported) const
 {
+    ignore_unused(descriptor);
     return IsSupportedForDataTypeRef(reasonIfUnsupported,
                                      input.GetDataType(),
                                      &TrueFunc<>,