[inspector] Refactor protocol-test.js

test/inspector/debugger/wasm-get-breakable-locations.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --expose-wasm
 
+let {session, contextGroup, Protocol} = InspectorTest.start('Tests breakable locations in wasm');
+
 utils.load('test/mjsunit/wasm/wasm-constants.js');
 utils.load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var builder = new WasmModuleBuilder();
 
 // clang-format off
 var func_idx = builder.addFunction('helper', kSig_v_v)
     .addLocals({i32_count: 1})
     .addBody([
         kExprNop,
@@ skipping 182 matching lines @@
 }
 
 function waitForAllPauses() {
   InspectorTest.log('Missing breakpoints: ' + allBreakableLocations.length);
   if (allBreakableLocations.length == 0) return;
   return Protocol.Debugger.oncePaused()
       .then(removePausedLocation)
       .then(Protocol.Debugger.resume())
       .then(waitForAllPauses);
 }