Revert of [debugger] remove debugger statement support from FCG/CS.

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index faeb5f302b9f05e4550fdc47e6f26d364d1f0e23..1a9572769bca07c74fd3dad0d113256072f1d9b5 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -714,9 +714,13 @@
                         Register scratch,
                         Label* fail);
 
-  // Frame restart support
+  // ---------------------------------------------------------------------------
+  // Debugger Support
+
+  void DebugBreak();
   void MaybeDropFrames();
 
+  // ---------------------------------------------------------------------------
   // Exception handling
 
   // Push a new stack handler and link into stack handler chain.