[torque-ls] fix Windows file paths

Bug: v8:8880
Change-Id: I8693def4aea26a5a9430f4c49d701fae14b2f27b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1578502Reviewed-by: Simon Zünd <szuend@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60963}

src/torque/utils.cc

@@ -73,7 +73,11 @@ std::string StringLiteralQuote(const std::string& s) {
   return result.str();
 }
 
+#ifdef V8_OS_WIN
+static const char kFileUriPrefix[] = "file:///";
+#else
 static const char kFileUriPrefix[] = "file://";
+#endif
 static const int kFileUriPrefixLength = sizeof(kFileUriPrefix) - 1;
 
 static int HexCharToInt(unsigned char c) {

test/unittests/torque/torque-utils-unittest.cc

@@ -17,12 +17,15 @@ TEST(TorqueUtils, FileUriDecodeIllegal) {
 }
 
 TEST(TorqueUtils, FileUriDecode) {
-  EXPECT_EQ(FileUriDecode("file:///some/src/file.tq").value(),
-            "/some/src/file.tq");
+#ifdef V8_OS_WIN
   EXPECT_EQ(FileUriDecode("file:///c%3A/torque/base.tq").value(),
-            "/c:/torque/base.tq");
+            "c:/torque/base.tq");
   EXPECT_EQ(FileUriDecode("file:///d%3a/lower/hex.txt").value(),
-            "/d:/lower/hex.txt");
+            "d:/lower/hex.txt");
+#else
+  EXPECT_EQ(FileUriDecode("file:///some/src/file.tq").value(),
+            "/some/src/file.tq");
+#endif
 }
 
 }  // namespace torque