Initial implementation of GetStackSample sampling profiler API.

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 38deb3e88e69f98c96814faea49f97e19dca5a17..df0aa76fcf7052a7f05e891364119cfa4848581e 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -547,22 +547,6 @@ struct AccessorDescriptor {
 };
 
 
-// Logging and profiling.  A StateTag represents a possible state of
-// the VM. The logger maintains a stack of these. Creating a VMState
-// object enters a state by pushing on the stack, and destroying a
-// VMState object leaves a state by popping the current state from the
-// stack.
-
-enum StateTag {
-  JS,
-  GC,
-  COMPILER,
-  OTHER,
-  EXTERNAL,
-  IDLE
-};
-
-
 // -----------------------------------------------------------------------------
 // Macros