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

src/full-codegen/full-codegen.cc

Index: src/full-codegen/full-codegen.cc
diff --git a/src/full-codegen/full-codegen.cc b/src/full-codegen/full-codegen.cc
index b8021366a2190fafde436ff184f3db6deb966703..ee33f0d9ff0fcd0414943ded224e9776aa11ab66 100644
--- a/src/full-codegen/full-codegen.cc
+++ b/src/full-codegen/full-codegen.cc
@@ -1228,13 +1228,8 @@ void FullCodeGenerator::VisitTryFinallyStatement(TryFinallyStatement* stmt) {
 
 
 void FullCodeGenerator::VisitDebuggerStatement(DebuggerStatement* stmt) {
-  Comment cmnt(masm_, "[ DebuggerStatement");
-  SetStatementPosition(stmt);
-
-  __ DebugBreak();
-  // Ignore the return value.
-
-  PrepareForBailoutForId(stmt->DebugBreakId(), BailoutState::NO_REGISTERS);

[Michael Starzinger, 2017/01/24 13:10:24]

suggestion: We can now also remove DebuggerStatement::DebugBreakId and the
underlying functionality for DebuggerStatement to have bailout ids at all. They
should no longer be needed.

+  // Debugger statement is not supported.
+  UNREACHABLE();
 }