Add boundary test case to StringToDouble

base/strings/string_number_conversions_unittest.cc

Index: base/strings/string_number_conversions_unittest.cc
diff --git a/base/strings/string_number_conversions_unittest.cc b/base/strings/string_number_conversions_unittest.cc
index 6b2bd97da9a63b49e17c9201e9cdc9d335bda40d..b1f2469f41851ab1334d487ce71c2b7d840f93c2 100644
--- a/base/strings/string_number_conversions_unittest.cc
+++ b/base/strings/string_number_conversions_unittest.cc
@@ -745,6 +745,8 @@ TEST(StringNumberConversionsTest, StringToDouble) {
     {"9e307", 9e307, true},
     {"1.7976e308", 1.7976e308, true},
     {"1.7977e308", HUGE_VAL, false},
+    {"1.797693134862315807e+308", HUGE_VAL, true},
+    {"1.797693134862315808e+308", HUGE_VAL, false},
     {"9e308", HUGE_VAL, false},
     {"9e309", HUGE_VAL, false},
     {"9e999", HUGE_VAL, false},
@@ -754,6 +756,8 @@ TEST(StringNumberConversionsTest, StringToDouble) {
     {"-9e307", -9e307, true},
     {"-1.7976e308", -1.7976e308, true},
     {"-1.7977e308", -HUGE_VAL, false},
+    {"-1.797693134862315807e+308", -HUGE_VAL, true},
+    {"-1.797693134862315808e+308", -HUGE_VAL, false},
     {"-9e308", -HUGE_VAL, false},
     {"-9e309", -HUGE_VAL, false},
     {"-9e999", -HUGE_VAL, false},