Expose TickSample and its APIs in v8-profiler.h

test/cctest/test-cpu-profiler.cc

Index: test/cctest/test-cpu-profiler.cc
diff --git a/test/cctest/test-cpu-profiler.cc b/test/cctest/test-cpu-profiler.cc
index a1968be8da68a61a89cda7bbd7eede2490167cd0..8b34875f2b8dd0f5f13e8aa021ec76c23f512648 100644
--- a/test/cctest/test-cpu-profiler.cc
+++ b/test/cctest/test-cpu-profiler.cc
@@ -81,7 +81,7 @@ static void EnqueueTickSampleEvent(ProfilerEventsProcessor* proc,
                                    i::Address frame1,
                                    i::Address frame2 = NULL,
                                    i::Address frame3 = NULL) {
-  i::TickSample* sample = proc->StartTickSample();
+  v8::TickSample* sample = proc->StartTickSample();
   sample->pc = frame1;
   sample->tos = frame1;
   sample->frames_count = 0;
@@ -309,10 +309,10 @@ TEST(Issue1398) {
 
   profiler_listener.CodeCreateEvent(i::Logger::BUILTIN_TAG, code, "bbb");
 
-  i::TickSample* sample = processor->StartTickSample();
+  v8::TickSample* sample = processor->StartTickSample();
   sample->pc = code->address();
   sample->tos = 0;
-  sample->frames_count = i::TickSample::kMaxFramesCount;
+  sample->frames_count = v8::TickSample::kMaxFramesCount;
   for (unsigned i = 0; i < sample->frames_count; ++i) {
     sample->stack[i] = code->address();
   }
@@ -331,7 +331,7 @@ TEST(Issue1398) {
     ++actual_depth;
   }
 
-  CHECK_EQ(1 + i::TickSample::kMaxFramesCount, actual_depth);  // +1 for PC.
+  CHECK_EQ(1 + v8::TickSample::kMaxFramesCount, actual_depth);  // +1 for PC.
 }
 
 TEST(DeleteAllCpuProfiles) {