[compiler] Add baseline tier to compilation pipeline.

src/compiler.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast/ast.h"
 #include "src/bailout-reason.h"
@@ skipping 26 matching lines @@
   enum ClearExceptionFlag { KEEP_EXCEPTION, CLEAR_EXCEPTION };
   enum ConcurrencyMode { NOT_CONCURRENT, CONCURRENT };
 
   // ===========================================================================
   // The following family of methods ensures a given function is compiled. The
   // general contract is that failures will be reported by returning {false},
   // whereas successful compilation ensures the {is_compiled} predicate on the
   // given function holds (except for live-edit, which compiles the world).
 
   static bool Compile(Handle<JSFunction> function, ClearExceptionFlag flag);
+  static bool CompileBaseline(Handle<JSFunction> function);
   static bool CompileOptimized(Handle<JSFunction> function, ConcurrencyMode);
   static bool CompileDebugCode(Handle<JSFunction> function);
   static bool CompileDebugCode(Handle<SharedFunctionInfo> shared);
   static bool CompileForLiveEdit(Handle<Script> script);
 
   // Generate and install code from previously queued optimization job.
   static void FinalizeOptimizedCompileJob(OptimizedCompileJob* job);
 
   // Give the compiler a chance to perform low-latency initialization tasks of
   // the given {function} on its instantiation. Note that only the runtime will
@@ skipping 569 matching lines @@
   MUST_USE_RESULT Status SetLastStatus(Status status) {
     last_status_ = status;
     return last_status_;
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_H_