Revert "Switch to the new SkSL lexer."

This reverts commit c576e93d174f3106e072a2f506bca3990b541265.

Reason for revert: ASAN failures

Original change's description:
> Switch to the new SkSL lexer.
> 
> This completely replaces flex with a new in-house lexical analyzer generator,
> which we have done for performance and memory usage reasons. Flex requires us
> to copy strings every time we need the text of a token, whereas this new lexer
> allows us to handle strings as a (non-null-terminated) pointer and length
> everywhere, eliminating most string copies.
> 
> Bug: skia:
> Change-Id: I2add26efc9e20cb699520e82abcf713af3968aca
> Reviewed-on: https://skia-review.googlesource.com/39780
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

TBR=bsalomon@google.com,ethannicholas@google.com

Change-Id: If27b750a5f696d06a6bcffed12fe9f0598e084a6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/44881
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/sksl/ir/SkSLSetting.h b/src/sksl/ir/SkSLSetting.h
index f479ad167b..995fcf55bf 100644
--- a/src/sksl/ir/SkSLSetting.h
+++ b/src/sksl/ir/SkSLSetting.h
@@ -18,8 +18,8 @@ namespace SkSL {
  * collapsed down to their constant representations during the compilation process.
  */
 struct Setting : public Expression {
-    Setting(int offset, String name, std::unique_ptr<Expression> value)
-    : INHERITED(offset, kSetting_Kind, value->fType)
+    Setting(Position position, String name, std::unique_ptr<Expression> value)
+    : INHERITED(position, kSetting_Kind, value->fType)
     , fName(std::move(name))
     , fValue(std::move(value)) {
         ASSERT(fValue->isConstant());