Add CollectSample API function to CpuProfiler

src/profiler/profile-generator.h

Index: src/profiler/profile-generator.h
diff --git a/src/profiler/profile-generator.h b/src/profiler/profile-generator.h
index 47a73f191a13ce8db0142c26bf9305f50e7b2c1b..3c976d62924b3a27f032f92439c75b027aff2e3a 100644
--- a/src/profiler/profile-generator.h
+++ b/src/profiler/profile-generator.h
@@ -192,7 +192,8 @@ class ProfileTree {
 
   ProfileNode* AddPathFromEnd(
       const Vector<CodeEntry*>& path,
-      int src_line = v8::CpuProfileNode::kNoLineNumberInfo);
+      int src_line = v8::CpuProfileNode::kNoLineNumberInfo,
+      bool update_stats = true);
   ProfileNode* root() const { return root_; }
   unsigned next_node_id() { return next_node_id_++; }
   unsigned GetFunctionId(const ProfileNode* node);
@@ -225,7 +226,7 @@ class CpuProfile {
 
   // Add pc -> ... -> main() call path to the profile.
   void AddPath(base::TimeTicks timestamp, const Vector<CodeEntry*>& path,
-               int src_line);
+               int src_line, bool update_stats);
   void CalculateTotalTicksAndSamplingRate();
 
   const char* title() const { return title_; }
@@ -333,7 +334,8 @@ class CpuProfilesCollection {
 
   // Called from profile generator thread.
   void AddPathToCurrentProfiles(base::TimeTicks timestamp,
-                                const Vector<CodeEntry*>& path, int src_line);
+                                const Vector<CodeEntry*>& path, int src_line,
+                                bool update_stats);
 
   // Limits the number of profiles that can be simultaneously collected.
   static const int kMaxSimultaneousProfiles = 100;