Rename write buffers to store buffers.

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
===================================================================
--- src/x64/code-stubs-x64.cc	(revision 6201)
+++ src/x64/code-stubs-x64.cc	(working copy)
@@ -255,8 +255,8 @@
 }
 
 
-void WriteBufferOverflowStub::Generate(MacroAssembler* masm) {
-  // We don't allow a GC during a write buffer overflow so there is no need to
+void StoreBufferOverflowStub::Generate(MacroAssembler* masm) {
+  // We don't allow a GC during a store buffer overflow so there is no need to
   // store the registers in any particular way, but we do have to store and
   // restore them.
   Register saved_regs[] =
@@ -276,9 +276,9 @@
   }
   const int argument_count = 0;
   __ PrepareCallCFunction(argument_count);
-  ExternalReference write_buffer_overflow =
-      ExternalReference(Runtime::FunctionForId(Runtime::kWriteBufferOverflow));
-  __ CallCFunction(write_buffer_overflow, argument_count);
+  ExternalReference store_buffer_overflow =
+      ExternalReference(Runtime::FunctionForId(Runtime::kStoreBufferOverflow));
+  __ CallCFunction(store_buffer_overflow, argument_count);
   if (save_doubles_ == kSaveFPRegs) {
     CpuFeatures::Scope scope(SSE2);
     for (int i = 0; i < XMMRegister::kNumRegisters; i++) {