[frames] Remove obsolete JavaScriptFrame::GetInlineCount() method.

src/frames.h

Index: src/frames.h
diff --git a/src/frames.h b/src/frames.h
index b4247c9bdbe97ef710dacb9e52cd8e173bab02df..1bd8f3026b6af672cd4d2c2e27ac3dbfdc710c40 100644
--- a/src/frames.h
+++ b/src/frames.h
@@ -550,9 +550,6 @@ class JavaScriptFrame: public StandardFrame {
   // Determine the code for the frame.
   virtual Code* unchecked_code() const;
 
-  // Returns the levels of inlining for this frame.
-  virtual int GetInlineCount() { return 1; }
-
   // Return a list with JSFunctions of this frame.
   virtual void GetFunctions(List<JSFunction*>* functions);
 
@@ -627,8 +624,6 @@ class OptimizedFrame : public JavaScriptFrame {
   // GC support.
   virtual void Iterate(ObjectVisitor* v) const;
 
-  virtual int GetInlineCount();
-
   // Return a list with JSFunctions of this frame.
   // The functions are ordered bottom-to-top (i.e. functions.last()
   // is the top-most activation)