Enable full WASM function names with arguments for Intel VTune

If WASM code is profiled with Intel VTune Profiler then the user sees 
incomplete function name - a function name is cut when a space is met.
This patch fixes the issue to show a complete function name including 
arguments.

Change-Id: I0e550e921acb703ec14fe83d67e7bb47035f739d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2246575
Commit-Queue: Bill Budge <bbudge@chromium.org>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68821}

src/third_party/vtune/vtune-jit.cc

@@ -151,8 +151,23 @@ static std::string GetFunctionNameFromMixedName(const char* str, int length) {
 
   start_ptr = const_cast<char*>(str + index);
 
-  while (index < length && str[index++] != ' ') {
+  // Detecting JS and WASM function names. In JitCodeEvent->name.str 
+  // JS functions name ends with a space symbol. WASM function name 
+  // ends with the latest closing parenthesis. 
+  char last_char = ' ';
+  int parenthesis_count = 0;
+  while (index < length) {
+    if (str[index] == '(') {
+      last_char = ')';
+      parenthesis_count++;
+    }
+    if (str[index] == ')') parenthesis_count--;
+    if (str[index] == last_char && parenthesis_count == 0) {
+      if (last_char == ')') count++;
+      break;
+    }
     count++;
+    index++;
   }
 
   return std::string(start_ptr, count);