PPC: [runtime] Introduce dedicated JSBoundFunction to represent bound functions.

src/ppc/macro-assembler-ppc.h

Index: src/ppc/macro-assembler-ppc.h
diff --git a/src/ppc/macro-assembler-ppc.h b/src/ppc/macro-assembler-ppc.h
index 316688e40949f39f33a16c731190adb3fd00b023..09bc11e1c9436163f87b8372c32197bc440e94ad 100644
--- a/src/ppc/macro-assembler-ppc.h
+++ b/src/ppc/macro-assembler-ppc.h
@@ -1321,6 +1321,10 @@ class MacroAssembler : public Assembler {
 
   void AssertFunction(Register object);
 
+  // Abort execution if argument is not a JSBoundFunction,
+  // enabled via --debug-code.
+  void AssertBoundFunction(Register object);
+
   // Abort execution if argument is not undefined or an AllocationSite, enabled
   // via --debug-code.
   void AssertUndefinedOrAllocationSite(Register object, Register scratch);