Update V8 to r5214 as required by WebKit r65072.

Change-Id: I387277a00cc0949597c0f69a8e4f2da60213c8f2
diff --git a/src/full-codegen.cc b/src/full-codegen.cc
index 8a8b39b..a468f14 100644
--- a/src/full-codegen.cc
+++ b/src/full-codegen.cc
@@ -770,7 +770,7 @@
 
 void FullCodeGenerator::SetReturnPosition(FunctionLiteral* fun) {
   if (FLAG_debug_info) {
-    CodeGenerator::RecordPositions(masm_, fun->end_position());
+    CodeGenerator::RecordPositions(masm_, fun->end_position() - 1);
   }
 }
 
@@ -917,6 +917,8 @@
     EmitSwapElements(expr->arguments());
   } else if (strcmp("_GetFromCache", *name->ToCString()) == 0) {
     EmitGetFromCache(expr->arguments());
+  } else if (strcmp("_IsRegExpEquivalent", *name->ToCString()) == 0) {
+    EmitIsRegExpEquivalent(expr->arguments());
   } else {
     UNREACHABLE();
   }