Make concrete classes for individual call descriptors.

src/ia32/debug-ia32.cc

Index: src/ia32/debug-ia32.cc
diff --git a/src/ia32/debug-ia32.cc b/src/ia32/debug-ia32.cc
index 72978315e7304711a70515f66b367b7f51bb2d88..4331b088fb7c59f2b32973f38cf60fb4b4af9f01 100644
--- a/src/ia32/debug-ia32.cc
+++ b/src/ia32/debug-ia32.cc
@@ -180,17 +180,17 @@ void DebugCodegen::GenerateCallICStubDebugBreak(MacroAssembler* masm) {
 
 void DebugCodegen::GenerateLoadICDebugBreak(MacroAssembler* masm) {
   // Register state for IC load call (from ic-ia32.cc).
-  Register receiver = LoadConvention::ReceiverRegister();
-  Register name = LoadConvention::NameRegister();
+  Register receiver = LoadDescriptor::ReceiverRegister();
+  Register name = LoadDescriptor::NameRegister();
   Generate_DebugBreakCallHelper(masm, receiver.bit() | name.bit(), 0, false);
 }
 
 
 void DebugCodegen::GenerateStoreICDebugBreak(MacroAssembler* masm) {
   // Register state for IC store call (from ic-ia32.cc).
-  Register receiver = StoreConvention::ReceiverRegister();
-  Register name = StoreConvention::NameRegister();
-  Register value = StoreConvention::ValueRegister();
+  Register receiver = StoreDescriptor::ReceiverRegister();
+  Register name = StoreDescriptor::NameRegister();
+  Register value = StoreDescriptor::ValueRegister();
   Generate_DebugBreakCallHelper(
       masm, receiver.bit() | name.bit() | value.bit(), 0, false);
 }
@@ -204,9 +204,9 @@ void DebugCodegen::GenerateKeyedLoadICDebugBreak(MacroAssembler* masm) {
 
 void DebugCodegen::GenerateKeyedStoreICDebugBreak(MacroAssembler* masm) {
   // Register state for keyed IC store call (from ic-ia32.cc).
-  Register receiver = StoreConvention::ReceiverRegister();
-  Register name = StoreConvention::NameRegister();
-  Register value = StoreConvention::ValueRegister();
+  Register receiver = StoreDescriptor::ReceiverRegister();
+  Register name = StoreDescriptor::NameRegister();
+  Register value = StoreDescriptor::ValueRegister();
   Generate_DebugBreakCallHelper(
       masm, receiver.bit() | name.bit() | value.bit(), 0, false);
 }