Reland "Renamed SkSL "offset" to "line""

This reverts commit cc91452f0a65f261283615db9ed3d37b1c3acd15.

Change-Id: I7eff0ddeebef4ce298893f9b3ba410b09647e9a4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/453138
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
diff --git a/tests/SkSLDSLTest.cpp b/tests/SkSLDSLTest.cpp
index af640a1..3450e46 100644
--- a/tests/SkSLDSLTest.cpp
+++ b/tests/SkSLDSLTest.cpp
@@ -1249,14 +1249,14 @@
 DEF_GPUTEST_FOR_MOCK_CONTEXT(DSLCall, r, ctxInfo) {
     AutoDSLContext context(ctxInfo.directContext()->priv().getGpu());
     {
-        DSLExpression sqrt(DSLWriter::IRGenerator().convertIdentifier(/*offset=*/-1, "sqrt"));
+        DSLExpression sqrt(DSLWriter::IRGenerator().convertIdentifier(/*line=*/-1, "sqrt"));
         SkTArray<DSLWrapper<DSLExpression>> args;
         args.emplace_back(16);
         EXPECT_EQUAL(sqrt(std::move(args)), "4.0");  // sqrt(16) gets optimized to 4
     }
 
     {
-        DSLExpression pow(DSLWriter::IRGenerator().convertIdentifier(/*offset=*/-1, "pow"));
+        DSLExpression pow(DSLWriter::IRGenerator().convertIdentifier(/*line=*/-1, "pow"));
         DSLVar a(kFloat_Type, "a");
         DSLVar b(kFloat_Type, "b");
         SkTArray<DSLWrapper<DSLExpression>> args;