Remove unused constructor BinaryOperation(Assignment* compound_assignment).

BUG=
TEST=

Review URL: http://codereview.chromium.org/6880312

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7723 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ast.cc

@@ -337,15 +337,6 @@ bool BinaryOperation::ResultOverwriteAllowed() {
 }
 
 
-BinaryOperation::BinaryOperation(Assignment* assignment) {
-  ASSERT(assignment->is_compound());
-  op_ = assignment->binary_op();
-  left_ = assignment->target();
-  right_ = assignment->value();
-  pos_ = assignment->position();
-}
-
-
 // ----------------------------------------------------------------------------
 // Inlining support
 

src/ast.h

@@ -1427,9 +1427,6 @@ class BinaryOperation: public Expression {
         : AstNode::kNoNumber;
   }
 
-  // Create the binary operation corresponding to a compound assignment.
-  explicit BinaryOperation(Assignment* assignment);
-
   DECLARE_NODE_TYPE(BinaryOperation)
 
   virtual bool IsInlineable() const;