This patch is the propagation version of https://codereview.chromium.org/10824032 patch

src/assembler.h

Index: src/assembler.h
===================================================================
--- src/assembler.h	(revision 13212)
+++ src/assembler.h	(working copy)
@@ -53,7 +53,6 @@
 struct StatsCounter;
 // -----------------------------------------------------------------------------
 // Platform independent assembler base class.
-

[danno, 2012/12/20 16:27:20]

nit: don't make whitespace changes unrelated to your CL.

 class AssemblerBase: public Malloced {
  public:
   AssemblerBase(Isolate* isolate, void* buffer, int buffer_size);
@@ -821,7 +820,6 @@
   int written_statement_position;
 };
 
-

[danno, 2012/12/20 16:27:20]

nit: don't make whitespace changes unrelated to your CL, also style guide is 2
lines between, so it's correct in it's original form.

 class PositionsRecorder BASE_EMBEDDED {
  public:
   explicit PositionsRecorder(Assembler* assembler)
@@ -829,13 +827,17 @@
 #ifdef ENABLE_GDB_JIT_INTERFACE
     gdbjit_lineinfo_ = NULL;
 #endif
+    jit_code_event_line_info_ = NULL;
   }
 
+~PositionsRecorder() {
 #ifdef ENABLE_GDB_JIT_INTERFACE
-  ~PositionsRecorder() {
     delete gdbjit_lineinfo_;
+#endif
+    delete jit_code_event_line_info_;
   }
 
+#ifdef ENABLE_GDB_JIT_INTERFACE
   void StartGDBJITLineInfoRecording() {
     if (FLAG_gdbjit) {
       gdbjit_lineinfo_ = new GDBJITLineInfo();
@@ -848,7 +850,16 @@
     return lineinfo;
   }
 #endif
+  JITCodeLineInfo* InitializeJITLineInfo() {
+    jit_code_event_line_info_ = new JITCodeLineInfo();
+    return jit_code_event_line_info_;
+  }
 
+  JITCodeLineInfo* DetachJITLineInfo() {
+    JITCodeLineInfo* lineinfo = jit_code_event_line_info_;
+    jit_code_event_line_info_ = NULL;
+    return lineinfo;
+  }
   // Set current position to pos.
   void RecordPosition(int pos);
 
@@ -864,13 +875,16 @@
     return state_.current_statement_position;
   }
 
+  Assembler* assembler() {
+    return assembler_;
+  }
  private:
   Assembler* assembler_;
   PositionState state_;
 #ifdef ENABLE_GDB_JIT_INTERFACE
   GDBJITLineInfo* gdbjit_lineinfo_;
 #endif
-
+  JITCodeLineInfo* jit_code_event_line_info_;
   friend class PreservePositionScope;
 
   DISALLOW_COPY_AND_ASSIGN(PositionsRecorder);