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

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 94ba965393dee9521ce27a8f88742de8a311d513..c415ecda0560bec4584507dbf8c8cfd5f9825e73 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -1919,6 +1919,16 @@
   b(hi, fail);
 }
 
+
+void MacroAssembler::DebugBreak() {
+  mov(r0, Operand::Zero());
+  mov(r1,
+      Operand(ExternalReference(Runtime::kHandleDebuggerStatement, isolate())));
+  CEntryStub ces(isolate(), 1);
+  DCHECK(AllowThisStubCall(&ces));
+  Call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT);
+}
+
 void MacroAssembler::MaybeDropFrames() {
   // Check whether we need to drop frames to restart a function on the stack.
   ExternalReference restart_fp =