Print reason for disabling optimization. Kill --trace-bailout flag.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index aaca69f45bcb793d71d9dbff794571dd9b094ee5..50fe4ac0ced14ee445d4c3cb8995d56c52b8e120 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -89,17 +89,8 @@ void LCodeGen::FinishCode(Handle<Code> code) {
 }
 
 
-void LCodeGen::Abort(const char* format, ...) {
-  if (FLAG_trace_bailout) {
-    SmartArrayPointer<char> name(
-        info()->shared_info()->DebugName()->ToCString());
-    PrintF("Aborting LCodeGen in @\"%s\": ", *name);
-    va_list arguments;
-    va_start(arguments, format);
-    OS::VPrint(format, arguments);
-    va_end(arguments);
-    PrintF("\n");
-  }
+void LChunkBuilder::Abort(const char* reason) {
+  info()->set_bailout_reason(reason);
   status_ = ABORTED;
 }
 
@@ -261,7 +252,7 @@ bool LCodeGen::GenerateDeferredCode() {
 bool LCodeGen::GenerateDeoptJumpTable() {
   // TODO(plind): not clear that this will have advantage for MIPS.
   // Skipping it for now. Raised issue #100 for this.
-  Abort("Unimplemented: %s", "GenerateDeoptJumpTable");
+  Abort("Unimplemented: GenerateDeoptJumpTable");
   return false;
 }