[turbofan] Move some member methods off Pipeline.

src/compiler/pipeline.h

Index: src/compiler/pipeline.h
diff --git a/src/compiler/pipeline.h b/src/compiler/pipeline.h
index 87a7b726eb5d0e10a4142033aaaa1b7a1b0e5bcf..66eb33734b75e69e4ea60fe4a7c898393a19c04b 100644
--- a/src/compiler/pipeline.h
+++ b/src/compiler/pipeline.h
@@ -89,11 +89,6 @@ class Pipeline {
   // Perform the actual code generation and return handle to a code object.
   Handle<Code> GenerateCode(Linkage* linkage);
 
-  // Run the entire pipeline and generate a handle to a code object.
-  Handle<Code> GenerateCode();
-
-  void BeginPhaseKind(const char* phase_kind);
-  void EndPhaseKind();
   bool ScheduleAndSelectInstructions(Linkage* linkage);
   void RunPrintAndVerify(const char* phase, bool untyped = false);
   Handle<Code> ScheduleAndGenerateCode(CallDescriptor* call_descriptor);