Remove kDontInline and simplify compiler hints.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 50499db3edb064e34c9499ea6d45944becd8d2fb..a494778a989c3c3963f8ba288b18ec5fa5359b58 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -7223,9 +7223,6 @@ class SharedFunctionInfo: public HeapObject {
   // Is this a function or top-level/eval code.
   DECL_BOOLEAN_ACCESSORS(is_function)
 
-  // Indicates that the function cannot be inlined.
-  DECL_BOOLEAN_ACCESSORS(dont_inline)
-
   // Indicates that code for this function cannot be cached.
   DECL_BOOLEAN_ACCESSORS(dont_cache)
 
@@ -7287,11 +7284,6 @@ class SharedFunctionInfo: public HeapObject {
                                                reason));
   }
 
-  void set_dont_optimize_reason(BailoutReason reason) {
-    set_bailout_reason(reason);
-    set_dont_inline(reason != kNoReason);
-  }
-
   // Check whether or not this function is inlineable.
   bool IsInlineable();
 
@@ -7434,7 +7426,6 @@ class SharedFunctionInfo: public HeapObject {
     kIsAnonymous,
     kNameShouldPrintAsAnonymous,
     kIsFunction,
-    kDontInline,
     kDontCache,
     kDontFlush,
     kIsGenerator,