[tracing] Add native allocation tracing mode.

base/trace_event/heap_profiler_stack_frame_deduplicator.h

Index: base/trace_event/heap_profiler_stack_frame_deduplicator.h
diff --git a/base/trace_event/heap_profiler_stack_frame_deduplicator.h b/base/trace_event/heap_profiler_stack_frame_deduplicator.h
index 4932534e1d790a578290effd9590bc0fe43a64bb..b686f866e1168632f40c8da07c019112bb1d8ab8 100644
--- a/base/trace_event/heap_profiler_stack_frame_deduplicator.h
+++ b/base/trace_event/heap_profiler_stack_frame_deduplicator.h
@@ -30,10 +30,13 @@ class BASE_EXPORT StackFrameDeduplicator : public ConvertableToTraceFormat {
  public:
   // A node in the call tree.
   struct FrameNode {
-    FrameNode(StackFrame frame, int parent_frame_index);
+    FrameNode(StackFrameType frame_type,
+              StackFrame frame,
+              int parent_frame_index);
     FrameNode(const FrameNode& other);
     ~FrameNode();
 
+    StackFrameType frame_type;
     StackFrame frame;
 
     // The index of the parent stack frame in |frames_|, or -1 if there is no
@@ -53,7 +56,8 @@ class BASE_EXPORT StackFrameDeduplicator : public ConvertableToTraceFormat {
   // (e.g. main) and |endFrame| is a pointer past the top frame (most recently
   // called function), and returns the index of its leaf node in |frames_|.
   // Returns -1 if the backtrace is empty.
-  int Insert(const StackFrame* beginFrame, const StackFrame* endFrame);
+  int Insert(StackFrameType frame_type,
+             const StackFrame* beginFrame, const StackFrame* endFrame);
 
   // Iterators over the frame nodes in the call tree.
   ConstIterator begin() const { return frames_.begin(); }