Preliminary lowering of typed array loads in TF.

src/compiler/js-typed-lowering.h

Index: src/compiler/js-typed-lowering.h
diff --git a/src/compiler/js-typed-lowering.h b/src/compiler/js-typed-lowering.h
index 98888df45d84d7255e03fc71ad56fe8719616015..726aafca3bdfdcf806f301806b0da884c35b4f8b 100644
--- a/src/compiler/js-typed-lowering.h
+++ b/src/compiler/js-typed-lowering.h
@@ -39,6 +39,7 @@ class JSTypedLowering : public Reducer {
   Reduction ReplaceWith(Node* node) { return Reducer::Replace(node); }
   Reduction ReduceJSAdd(Node* node);
   Reduction ReduceJSComparison(Node* node);
+  Reduction ReduceJSPropertyLoad(Node* node);
   Reduction ReduceJSEqual(Node* node, bool invert);
   Reduction ReduceJSStrictEqual(Node* node, bool invert);
   Reduction ReduceJSToNumberInput(Node* input);
@@ -49,6 +50,10 @@ class JSTypedLowering : public Reducer {
                            Operator* intOp);
   Reduction ReduceI32Shift(Node* node, bool left_signed, Operator* shift_op);
 
+  // TODO(mstarzinger): Pull these out into a generic place for everyone to use.
+  FieldAccess FieldAccessForElements();
+  FieldAccess FieldAccessForExternalPointer();
+
   JSOperatorBuilder* javascript() { return jsgraph_->javascript(); }
   CommonOperatorBuilder* common() { return jsgraph_->common(); }
   SimplifiedOperatorBuilder* simplified() { return &simplified_; }