[inspector] console.timeEnd formats ms in the same way as JS formats double

test/inspector/inspector-impl.h

 // 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.
 
 #ifndef V8_TEST_INSPECTOR_PROTOCOL_INSPECTOR_IMPL_H_
 #define V8_TEST_INSPECTOR_PROTOCOL_INSPECTOR_IMPL_H_
 
 #include "include/v8-inspector.h"
 #include "include/v8.h"
 #include "src/base/macros.h"
@@ skipping 10 matching lines @@
   };
 
   InspectorClientImpl(TaskRunner* task_runner,
                       FrontendChannel* frontend_channel,
                       v8::base::Semaphore* ready_semaphore);
   virtual ~InspectorClientImpl();
 
   static v8_inspector::V8Inspector* InspectorFromContext(
       v8::Local<v8::Context> context);
 
+  void setCurrentTimeMSForTest(double time);
+
  private:
   // V8InspectorClient implementation.
   v8::Local<v8::Context> ensureDefaultContextInGroup(
       int context_group_id) override;
   double currentTimeMS() override;
   void runMessageLoopOnPause(int context_group_id) override;
   void quitMessageLoopOnPause() override;
 
   static v8_inspector::V8InspectorSession* SessionFromContext(
       v8::Local<v8::Context> context);
 
   friend class SendMessageToBackendTask;
 
   friend class ConnectTask;
   void connect(v8::Local<v8::Context> context);
 
   std::unique_ptr<v8_inspector::V8Inspector> inspector_;
   std::unique_ptr<v8_inspector::V8InspectorSession> session_;
   std::unique_ptr<v8_inspector::V8Inspector::Channel> channel_;
 
   v8::Isolate* isolate_;
   v8::Global<v8::Context> context_;
 
   TaskRunner* task_runner_;
   FrontendChannel* frontend_channel_;
 
+  bool current_time_set_for_test_ = false;
+  double current_time_ = 0.0;
+
   DISALLOW_COPY_AND_ASSIGN(InspectorClientImpl);
 };
 
 class SendMessageToBackendExtension : public v8::Extension {
  public:
   SendMessageToBackendExtension()
       : v8::Extension("v8_inspector/frontend",
                       "native function sendMessageToBackend();") {}
   virtual v8::Local<v8::FunctionTemplate> GetNativeFunctionTemplate(
       v8::Isolate* isolate, v8::Local<v8::String> name);
 
   static void set_backend_task_runner(TaskRunner* task_runner) {
     backend_task_runner_ = task_runner;
   }
 
  private:
   static void SendMessageToBackend(
       const v8::FunctionCallbackInfo<v8::Value>& args);
 
   static TaskRunner* backend_task_runner_;
 };
 
 #endif  //  V8_TEST_INSPECTOR_PROTOCOL_INSPECTOR_IMPL_H_