Make _CallFunction proxy-aware.

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index f4df669179c1351509bd83bae687fbf4b43d9cb4..faae095d55aed6f0a698a3d077faf8f1ce23f767 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -1379,12 +1379,17 @@ class LCallNamed: public LTemplateInstruction<1, 0, 0> {
 };
 
 
-class LCallFunction: public LTemplateInstruction<1, 0, 0> {
+class LCallFunction: public LTemplateInstruction<1, 1, 0> {
  public:
+  explicit LCallFunction(LOperand* function) {
+    inputs_[0] = function;
+  }
+
   DECLARE_CONCRETE_INSTRUCTION(CallFunction, "call-function")
   DECLARE_HYDROGEN_ACCESSOR(CallFunction)
 
-  int arity() const { return hydrogen()->argument_count() - 2; }
+  LOperand* function() { return inputs_[0]; }
+  int arity() const { return hydrogen()->argument_count() - 1; }
 };