[turbofan] Move CallBuffer from header to cc file.

src/compiler/instruction-selector-impl.h

Index: src/compiler/instruction-selector-impl.h
diff --git a/src/compiler/instruction-selector-impl.h b/src/compiler/instruction-selector-impl.h
index 0837c0612813bf03cedee5365c84097b08a97d6a..d33e0a108120b39c56fce8e14e0bf059d5250b68 100644
--- a/src/compiler/instruction-selector-impl.h
+++ b/src/compiler/instruction-selector-impl.h
@@ -318,33 +318,6 @@ class FlagsContinuation final {
   BasicBlock* false_block_;  // Only valid if mode_ == kFlags_branch.
 };
 
-
-// An internal helper class for generating the operands to calls.
-// TODO(bmeurer): Get rid of the CallBuffer business and make
-// InstructionSelector::VisitCall platform independent instead.
-struct CallBuffer {
-  CallBuffer(Zone* zone, const CallDescriptor* descriptor,
-             FrameStateDescriptor* frame_state);
-
-  const CallDescriptor* descriptor;
-  FrameStateDescriptor* frame_state_descriptor;
-  NodeVector output_nodes;
-  InstructionOperandVector outputs;
-  InstructionOperandVector instruction_args;
-  NodeVector pushed_nodes;
-
-  size_t input_count() const { return descriptor->InputCount(); }
-
-  size_t frame_state_count() const { return descriptor->FrameStateCount(); }
-
-  size_t frame_state_value_count() const {
-    return (frame_state_descriptor == NULL)
-               ? 0
-               : (frame_state_descriptor->GetTotalSize() +
-                  1);  // Include deopt id.
-  }
-};
-
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8