Update V8 to r7427: Initial merge by git

As required by WebKit r82507

Change-Id: I7ae83ef3f689356043b4929255b7c1dd31d8c5df
diff --git a/src/string-search.cc b/src/string-search.cc
index 5687443..3ae68b5 100644
--- a/src/string-search.cc
+++ b/src/string-search.cc
@@ -33,8 +33,9 @@
 
 // Storage for constants used by string-search.
 
-int StringSearchBase::kBadCharShiftTable[kUC16AlphabetSize];
-int StringSearchBase::kGoodSuffixShiftTable[kBMMaxShift + 1];
-int StringSearchBase::kSuffixTable[kBMMaxShift + 1];
+// Now in Isolate:
+// bad_char_shift_table()
+// good_suffix_shift_table()
+// suffix_table()
 
 }}  // namespace v8::internal