[interpreter] Add checks for source position to test-bytecode-generator.

test/cctest/interpreter/bytecode_expectations/StringConstants.golden

Index: test/cctest/interpreter/bytecode_expectations/StringConstants.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/StringConstants.golden b/test/cctest/interpreter/bytecode_expectations/StringConstants.golden
index 9cf212c9328b66f6cd56622160225139c3c44ba6..a35df08922fcdeab0c3a02836bfc9e0507b6de56 100644
--- a/test/cctest/interpreter/bytecode_expectations/StringConstants.golden
+++ b/test/cctest/interpreter/bytecode_expectations/StringConstants.golden
@@ -15,9 +15,9 @@ frame size: 0
 parameter count: 1
 bytecode array length: 4
 bytecodes: [
-  B(StackCheck),
-  B(LdaConstant), U8(0),
-  B(Return),
+  /*   30 E> */ B(StackCheck),
+  /*   34 S> */ B(LdaConstant), U8(0),
+  /*   61 S> */ B(Return),
 ]
 constant pool: [
   "This is a string",
@@ -33,11 +33,11 @@ frame size: 1
 parameter count: 1
 bytecode array length: 8
 bytecodes: [
-  B(StackCheck),
-  B(LdaConstant), U8(0),
-  B(Star), R(0),
-  B(LdaConstant), U8(1),
-  B(Return),
+  /*   30 E> */ B(StackCheck),
+  /*   42 S> */ B(LdaConstant), U8(0),
+  /*   42 E> */ B(Star), R(0),
+  /*   58 S> */ B(LdaConstant), U8(1),
+  /*   82 S> */ B(Return),
 ]
 constant pool: [
   "First string",
@@ -54,11 +54,11 @@ frame size: 1
 parameter count: 1
 bytecode array length: 8
 bytecodes: [
-  B(StackCheck),
-  B(LdaConstant), U8(0),
-  B(Star), R(0),
-  B(LdaConstant), U8(0),
-  B(Return),
+  /*   30 E> */ B(StackCheck),
+  /*   42 S> */ B(LdaConstant), U8(0),
+  /*   42 E> */ B(Star), R(0),
+  /*   57 S> */ B(LdaConstant), U8(0),
+  /*   79 S> */ B(Return),
 ]
 constant pool: [
   "Same string",