Extract hardcoded error strings into a single place and replace them with enum.

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 38308e5cdef8a71951428d18a14510b805c9070f..daaac68e8ff763f972043f83e74439627db93de4 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -1136,14 +1136,14 @@ class MacroAssembler: public Assembler {
 
   // Calls Abort(msg) if the condition cond is not satisfied.
   // Use --debug_code to enable.
-  void Assert(Condition cond, const char* msg);
+  void Assert(Condition cond, BailoutReason reason);
   void AssertFastElements(Register elements);
 
   // Like Assert(), but always enabled.
-  void Check(Condition cond, const char* msg);
+  void Check(Condition cond, BailoutReason reason);
 
   // Print a message to stdout and abort execution.
-  void Abort(const char* msg);
+  void Abort(BailoutReason msg);
 
   // Verify restrictions about code generated in stubs.
   void set_generating_stub(bool value) { generating_stub_ = value; }