dawn.node: Use utf16 compilation info

Bug: None
Change-Id: I5cb73922d2d3d16655fc20c7c18c1babe9ebd646
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/159924
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
diff --git a/src/dawn/node/binding/GPUShaderModule.cpp b/src/dawn/node/binding/GPUShaderModule.cpp
index a61a522..04ce4967 100644
--- a/src/dawn/node/binding/GPUShaderModule.cpp
+++ b/src/dawn/node/binding/GPUShaderModule.cpp
@@ -63,9 +63,9 @@
             }
         }
         uint64_t getLineNum(Napi::Env) override { return message.lineNum; }
-        uint64_t getLinePos(Napi::Env) override { return message.linePos; }
-        uint64_t getOffset(Napi::Env) override { return message.offset; }
-        uint64_t getLength(Napi::Env) override { return message.length; }
+        uint64_t getLinePos(Napi::Env) override { return message.utf16LinePos; }
+        uint64_t getOffset(Napi::Env) override { return message.utf16Offset; }
+        uint64_t getLength(Napi::Env) override { return message.utf16Length; }
     };
 
     using Messages = std::vector<interop::Interface<interop::GPUCompilationMessage>>;