[wasm] Remove some dead module decoder entry points.

R=clemensh@chromium.org
BUG=v8:7754

Change-Id: Ia4c2fb2d87c8a5de96fa9f1f0621d21ae3eda611
Reviewed-on: https://chromium-review.googlesource.com/1145181Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54591}

src/wasm/module-decoder.cc

@@ -1498,18 +1498,14 @@ WasmInitExpr DecodeWasmInitExprForTesting(const byte* start, const byte* end) {
   return decoder.DecodeInitExpr(start);
 }
 
-namespace {
-
-FunctionResult DecodeWasmFunction(Zone* zone, const ModuleWireBytes& wire_bytes,
-                                  const WasmModule* module,
-                                  const byte* function_start,
-                                  const byte* function_end,
-                                  Counters* counters) {
+FunctionResult DecodeWasmFunctionForTesting(
+    Zone* zone, const ModuleWireBytes& wire_bytes, const WasmModule* module,
+    const byte* function_start, const byte* function_end, Counters* counters) {
   size_t size = function_end - function_start;
   if (function_start > function_end)
     return FunctionResult::Error("start > end");
-  auto size_histogram =
-      SELECT_WASM_COUNTER(counters, module->origin, wasm, function_size_bytes);
+  auto size_histogram = SELECT_WASM_COUNTER(counters, module->origin, wasm,
+                                            function_size_bytes);
   // TODO(bradnelson): Improve histogram handling of ptrdiff_t.
   size_histogram->AddSample(static_cast<int>(size));
   if (size > kV8MaxWasmFunctionSize)
@@ -1520,25 +1516,6 @@ FunctionResult DecodeWasmFunction(Zone* zone, const ModuleWireBytes& wire_bytes,
                                       base::make_unique<WasmFunction>());
 }
 
-}  // namespace
-
-FunctionResult SyncDecodeWasmFunction(Isolate* isolate, Zone* zone,
-                                      const ModuleWireBytes& wire_bytes,
-                                      const WasmModule* module,
-                                      const byte* function_start,
-                                      const byte* function_end) {
-  return DecodeWasmFunction(zone, wire_bytes, module, function_start,
-                            function_end, isolate->counters());
-}
-
-FunctionResult AsyncDecodeWasmFunction(
-    Zone* zone, const ModuleWireBytes& wire_bytes, const WasmModule* module,
-    const byte* function_start, const byte* function_end,
-    std::shared_ptr<Counters> async_counters) {
-  return DecodeWasmFunction(zone, wire_bytes, module, function_start,
-                            function_end, async_counters.get());
-}
-
 AsmJsOffsetsResult DecodeAsmJsOffsets(const byte* tables_start,
                                       const byte* tables_end) {
   AsmJsOffsets table;

src/wasm/module-decoder.h

@@ -74,14 +74,9 @@ V8_EXPORT_PRIVATE FunctionSig* DecodeWasmSignatureForTesting(Zone* zone,
 
 // Decodes the bytes of a wasm function between
 // {function_start} and {function_end}.
-V8_EXPORT_PRIVATE FunctionResult SyncDecodeWasmFunction(
-    Isolate* isolate, Zone* zone, const ModuleWireBytes& wire_bytes,
-    const WasmModule* module, const byte* function_start,
-    const byte* function_end);
-
-V8_EXPORT_PRIVATE FunctionResult AsyncDecodeWasmFunction(
-    Zone* zone, ModuleEnv* env, const byte* function_start,
-    const byte* function_end, const std::shared_ptr<Counters> async_counters);
+V8_EXPORT_PRIVATE FunctionResult DecodeWasmFunctionForTesting(
+    Zone* zone, const ModuleWireBytes& wire_bytes, const WasmModule* module,
+    const byte* function_start, const byte* function_end, Counters* counters);
 
 V8_EXPORT_PRIVATE WasmInitExpr DecodeWasmInitExprForTesting(const byte* start,
                                                             const byte* end);

test/unittests/wasm/module-decoder-unittest.cc

@@ -1453,8 +1453,8 @@ TEST_F(WasmFunctionVerifyTest, Ok_v_v_empty) {
       kExprEnd    // body
   };
 
-  FunctionResult result = SyncDecodeWasmFunction(
-      isolate(), zone(), bytes, &module, data, data + sizeof(data));
+  FunctionResult result = DecodeWasmFunctionForTesting(
+      zone(), bytes, &module, data, data + sizeof(data), isolate()->counters());
   EXPECT_OK(result);
 
   if (result.val && result.ok()) {