[debug] introduce precise binary code coverage.

test/cctest/test-debug.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 6602 matching lines @@
   LocalContext env;
   v8::Isolate* isolate = env->GetIsolate();
   v8::HandleScope scope(isolate);
   v8::debug::Coverage::SelectMode(isolate, v8::debug::Coverage::kPreciseCount);
   v8::Local<v8::String> source = v8_str(
       "function f() {\n"
       "}\n"
       "f();\n"
       "f();");
   CompileRun(source);
-  v8::debug::Coverage coverage = v8::debug::Coverage::Collect(isolate, false);
+  v8::debug::Coverage coverage = v8::debug::Coverage::CollectPrecise(isolate);
   CHECK_EQ(1u, coverage.ScriptCount());
   v8::debug::Coverage::ScriptData script_data = coverage.GetScriptData(0);
   v8::Local<v8::debug::Script> script = script_data.GetScript();
   CHECK(script->Source()
             .ToLocalChecked()
             ->Equals(env.local(), source)
             .FromMaybe(false));
 
   CHECK_EQ(2u, script_data.FunctionCount());
   v8::debug::Coverage::FunctionData function_data =
@@ skipping 72 matching lines @@
   }
   if (i::FLAG_turbo) {
     // With turbofan we generate one return location per return statement,
     // each has line = 5, column = 0 as statement position.
     CHECK(returns_count == 4);
   } else {
     // Without turbofan we generate one return location.
     CHECK(returns_count == 1);
   }
 }