Improve handling of failed integer type conversions.

LayoutTests/storage/indexeddb/intversion-bad-parameters-expected.txt

Index: LayoutTests/storage/indexeddb/intversion-bad-parameters-expected.txt
diff --git a/LayoutTests/storage/indexeddb/intversion-bad-parameters-expected.txt b/LayoutTests/storage/indexeddb/intversion-bad-parameters-expected.txt
index 14557d45366ddf341b6c012070e289123a11887d..d76e6e40a1f343ae5496e6d3ebfa69bac94fd5c1 100644
--- a/LayoutTests/storage/indexeddb/intversion-bad-parameters-expected.txt
+++ b/LayoutTests/storage/indexeddb/intversion-bad-parameters-expected.txt
@@ -11,34 +11,34 @@ indexedDB.deleteDatabase(dbname)
 deleteSuccess():
 Expecting TypeError exception from indexedDB.open(dbname, 'stringversion')
 PASS Exception was thrown.
-PASS indexedDB.open(dbname, 'stringversion') threw TypeError: Type error
+PASS indexedDB.open(dbname, 'stringversion') threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is not of type 'unsigned long long'.
 Expecting TypeError exception from indexedDB.open(dbname, 0)
 PASS Exception was thrown.
 PASS indexedDB.open(dbname, 0) threw TypeError: Type error
 Expecting TypeError exception from indexedDB.open(dbname, -5)
 PASS Exception was thrown.
-PASS indexedDB.open(dbname, -5) threw TypeError: Type error
+PASS indexedDB.open(dbname, -5) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is outside the 'unsigned long long' value range.
 Expecting TypeError exception from indexedDB.open(dbname, Infinity)
 PASS Exception was thrown.
-PASS indexedDB.open(dbname, Infinity) threw TypeError: Type error
+PASS indexedDB.open(dbname, Infinity) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is infinite and not of type 'unsigned long long'.
 Expecting TypeError exception from indexedDB.open(dbname, -Infinity)
 PASS Exception was thrown.
-PASS indexedDB.open(dbname, -Infinity) threw TypeError: Type error
+PASS indexedDB.open(dbname, -Infinity) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is infinite and not of type 'unsigned long long'.
 Expecting TypeError exception from indexedDB.open(dbname, NaN)
 PASS Exception was thrown.
-PASS indexedDB.open(dbname, NaN) threw TypeError: Type error
+PASS indexedDB.open(dbname, NaN) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is not of type 'unsigned long long'.
 Expecting TypeError exception from indexedDB.open(dbname, -1)
 PASS Exception was thrown.
-PASS indexedDB.open(dbname, -1) threw TypeError: Type error
+PASS indexedDB.open(dbname, -1) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is outside the 'unsigned long long' value range.
 Expecting TypeError exception from indexedDB.open(dbname, 0x20000000000000)
 PASS Exception was thrown.
-PASS indexedDB.open(dbname, 0x20000000000000) threw TypeError: Type error
+PASS indexedDB.open(dbname, 0x20000000000000) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is outside the 'unsigned long long' value range.
 Expecting TypeError exception from indexedDB.open(dbname, null)
 PASS Exception was thrown.
 PASS indexedDB.open(dbname, null) threw TypeError: Type error
 Expecting TypeError exception from indexedDB.open(dbname, undefined)
 PASS Exception was thrown.
-PASS indexedDB.open(dbname, undefined) threw TypeError: Type error
+PASS indexedDB.open(dbname, undefined) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is not of type 'unsigned long long'.
 PASS successfullyParsed is true
 
 TEST COMPLETE