Expose TickSample and its APIs in v8-profiler.h

test/cctest/trace-extension.h

Index: test/cctest/trace-extension.h
diff --git a/test/cctest/trace-extension.h b/test/cctest/trace-extension.h
index 53e178b3ba7cb8406bb199ce77a467c6809fcc8f..b20c4ae9dfa52c88d5c77bf3e1c071a361baabb9 100644
--- a/test/cctest/trace-extension.h
+++ b/test/cctest/trace-extension.h
@@ -31,9 +31,8 @@
 #include "src/v8.h"
 
 namespace v8 {
-namespace internal {
-
 struct TickSample;
+namespace internal {
 
 class TraceExtension : public v8::Extension {
  public:
@@ -45,7 +44,7 @@ class TraceExtension : public v8::Extension {
   static void JSEntrySP(const v8::FunctionCallbackInfo<v8::Value>& args);
   static void JSEntrySPLevel2(const v8::FunctionCallbackInfo<v8::Value>& args);
   static Address GetJsEntrySp();
-  static void InitTraceEnv(TickSample* sample);
+  static void InitTraceEnv(v8::TickSample* sample);
   static void DoTrace(Address fp);
  private:
   static Address GetFP(const v8::FunctionCallbackInfo<v8::Value>& args);