Replace remaining vector<Expression>s with ExpressionArray.

This fixes up a handful of places which weren't caught in the initial
work (at http://review.skia.org/325861) because they haven't been
converted to the new IRNode structure yet.

Change-Id: I86b61fe3c601711b5802fe35218ca2e6378634da
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/326357
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
diff --git a/src/sksl/SkSLSPIRVCodeGenerator.cpp b/src/sksl/SkSLSPIRVCodeGenerator.cpp
index 0adcfbe..08a1665 100644
--- a/src/sksl/SkSLSPIRVCodeGenerator.cpp
+++ b/src/sksl/SkSLSPIRVCodeGenerator.cpp
@@ -1887,8 +1887,7 @@
                                                    &intfStruct,
                                                    /*builtin=*/false,
                                                    Variable::Storage::kGlobal));
-                InterfaceBlock intf(-1, intfVar, name, String(""),
-                                    std::vector<std::unique_ptr<Expression>>(), st);
+                InterfaceBlock intf(-1, intfVar, name, String(""), ExpressionArray(), st);
 
                 fRTHeightStructId = this->writeInterfaceBlock(intf, false);
                 fRTHeightFieldIndex = 0;