Revert "Create a RegisterSpec class inside of the IC that provides:"

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index 6ace698393754fe4b106682c67d4a73d2eaf5abc..0bc57390ecedc08840e4f5d9e571ce799aca4435 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -89,6 +89,26 @@ void CreateAllocationSiteStub::InitializeInterfaceDescriptor(
 }
 
 
+void KeyedLoadFastElementStub::InitializeInterfaceDescriptor(
+    CodeStubInterfaceDescriptor* descriptor) {
+  static Register registers[] = { rdx, rax };
+  descriptor->register_param_count_ = 2;
+  descriptor->register_params_ = registers;
+  descriptor->deoptimization_handler_ =
+      FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure);
+}
+
+
+void KeyedLoadDictionaryElementStub::InitializeInterfaceDescriptor(
+    CodeStubInterfaceDescriptor* descriptor) {
+  static Register registers[] = { rdx, rax };
+  descriptor->register_param_count_ = 2;
+  descriptor->register_params_ = registers;
+  descriptor->deoptimization_handler_ =
+    FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure);
+}
+
+
 void RegExpConstructResultStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
   static Register registers[] = { rcx, rbx, rax };
@@ -99,6 +119,16 @@ void RegExpConstructResultStub::InitializeInterfaceDescriptor(
 }
 
 
+void KeyedLoadGenericElementStub::InitializeInterfaceDescriptor(
+    CodeStubInterfaceDescriptor* descriptor) {
+  static Register registers[] = { rdx, rax };
+  descriptor->register_param_count_ = 2;
+  descriptor->register_params_ = registers;
+  descriptor->deoptimization_handler_ =
+      Runtime::FunctionForId(Runtime::kKeyedGetProperty)->entry;
+}
+
+
 void LoadFieldStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
   static Register registers[] = { rax };