Add initial code-stub version of Object.prototype.hasOwnProperty

src/compiler/code-stub-assembler.h

Index: src/compiler/code-stub-assembler.h
diff --git a/src/compiler/code-stub-assembler.h b/src/compiler/code-stub-assembler.h
index 8a6f6ae226bd69a15d522cedf90f88e38ecaeece..7f11d56efd35b3fd9b925c66db437c7e98f22484 100644
--- a/src/compiler/code-stub-assembler.h
+++ b/src/compiler/code-stub-assembler.h
@@ -310,10 +310,21 @@ class CodeStubAssembler {
   Node* TruncateHeapNumberValueToWord32(Node* object);
   // Load the bit field of a Map.
   Node* LoadMapBitField(Node* map);
-  // Load the instance type of a Map.
+  // Load bit field 2 of a map.
+  Node* LoadMapBitField2(Node* map);
+  // Load bit field 3 of a map.
+  Node* LoadMapBitField3(Node* map);
+  // Load the instance type of a map.
   Node* LoadMapInstanceType(Node* map);
+  // Load the instance descriptors of a map.
+  Node* LoadMapDescriptors(Node* map);
+
+  // Load the hash field of a name.
+  Node* LoadNameHash(Node* name);
 
   // Load an array element from a FixedArray.
+  Node* LoadFixedArrayElementInt32Index(Node* object, Node* int32_index,
+                                        int additional_offset = 0);
   Node* LoadFixedArrayElementSmiIndex(Node* object, Node* smi_index,
                                       int additional_offset = 0);
   Node* LoadFixedArrayElementConstantIndex(Node* object, int index);
@@ -335,6 +346,11 @@ class CodeStubAssembler {
   // Load the instance type of an HeapObject.
   Node* LoadInstanceType(Node* object);
 
+  // Load the elements backing store of a JSObject.
+  Node* LoadElements(Node* object);
+  // Load the length of a fixed array base instance.
+  Node* LoadFixedArrayBaseLength(Node* array);
+
   // Returns a node that is true if the given bit is set in |word32|.
   template <typename T>
   Node* BitFieldDecode(Node* word32) {