Reland: Add Scoped Context Info (Isolate) to V8 Traces

src/libplatform/default-platform.h

 // Copyright 2013 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_LIBPLATFORM_DEFAULT_PLATFORM_H_
 #define V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
 
 #include <functional>
 #include <map>
 #include <queue>
@@ skipping 29 matching lines @@
   void CallOnForegroundThread(v8::Isolate* isolate, Task* task) override;
   void CallDelayedOnForegroundThread(Isolate* isolate, Task* task,
                                      double delay_in_seconds) override;
   void CallIdleOnForegroundThread(Isolate* isolate, IdleTask* task) override;
   bool IdleTasksEnabled(Isolate* isolate) override;
   double MonotonicallyIncreasingTime() override;
   const uint8_t* GetCategoryGroupEnabled(const char* name) override;
   const char* GetCategoryGroupName(
       const uint8_t* category_enabled_flag) override;
   uint64_t AddTraceEvent(char phase, const uint8_t* category_enabled_flag,
+                         const char* name, const char* scope, uint64_t id,
+                         uint64_t bind_id, int32_t num_args,
+                         const char** arg_names, const uint8_t* arg_types,
+                         const uint64_t* arg_values,
+                         unsigned int flags) override;
+  // TODO(fmeawad): Remove once all embedders implement the scope version.
+  uint64_t AddTraceEvent(char phase, const uint8_t* category_enabled_flag,
                          const char* name, uint64_t id, uint64_t bind_id,
                          int32_t num_args, const char** arg_names,
                          const uint8_t* arg_types, const uint64_t* arg_values,
                          unsigned int flags) override;
   void UpdateTraceEventDuration(const uint8_t* category_enabled_flag,
                                 const char* name, uint64_t handle) override;
 
 
  private:
   static const int kMaxThreadPoolSize;
@@ skipping 16 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(DefaultPlatform);
 };
 
 
 }  // namespace platform
 }  // namespace v8
 
 
 #endif  // V8_LIBPLATFORM_DEFAULT_PLATFORM_H_