Revert of [inspector] console get all information from inspector when needed

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 21 matching lines @@
 
   static v8_inspector::V8Inspector* InspectorFromContext(
       v8::Local<v8::Context> context);
   static v8_inspector::V8InspectorSession* SessionFromContext(
       v8::Local<v8::Context> context);
 
   // context_group_id = 0 means default context group.
   v8_inspector::V8InspectorSession* session(int context_group_id = 0);
 
   void setCurrentTimeMSForTest(double time);
-  void setMemoryInfoForTest(v8::Local<v8::Value> memory_info);
 
  private:
   // V8InspectorClient implementation.
   bool formatAccessorsAsProperties(v8::Local<v8::Value>) override;
   v8::Local<v8::Context> ensureDefaultContextInGroup(
       int context_group_id) override;
   double currentTimeMS() override;
-  v8::MaybeLocal<v8::Value> memoryInfo(v8::Isolate* isolate,
-                                       v8::Local<v8::Context>) override;
   void runMessageLoopOnPause(int context_group_id) override;
   void quitMessageLoopOnPause() override;
 
   friend class SendMessageToBackendTask;
 
   friend class ConnectTask;
   void connect(v8::Local<v8::Context> context);
   friend class DisconnectTask;
   void disconnect();
   friend class CreateContextGroupTask;
   int createContextGroup(v8::ExtensionConfiguration* extensions);
 
   std::unique_ptr<v8_inspector::V8Inspector> inspector_;
   std::unique_ptr<v8_inspector::V8Inspector::Channel> channel_;
 
   std::map<int, std::unique_ptr<v8_inspector::V8InspectorSession>> sessions_;
   std::map<int, std::unique_ptr<v8_inspector::StringBuffer>> states_;
 
   v8::Isolate* isolate_;
-  v8::Global<v8::Value> memory_info_;
 
   TaskRunner* task_runner_;
   FrontendChannel* frontend_channel_;
 
   bool current_time_set_for_test_ = false;
   double current_time_ = 0.0;
 
   DISALLOW_COPY_AND_ASSIGN(InspectorClientImpl);
 };
 
@@ skipping 10 matching lines @@
   }
 
  private:
   static void SendMessageToBackend(
       const v8::FunctionCallbackInfo<v8::Value>& args);
 
   static TaskRunner* backend_task_runner_;
 };
 
 #endif  //  V8_TEST_INSPECTOR_PROTOCOL_INSPECTOR_IMPL_H_