Migrate bindings constructors to the new ExceptionState model.

LayoutTests/fast/eventsource/eventsource-constructor-expected.txt

Index: LayoutTests/fast/eventsource/eventsource-constructor-expected.txt
diff --git a/LayoutTests/fast/eventsource/eventsource-constructor-expected.txt b/LayoutTests/fast/eventsource/eventsource-constructor-expected.txt
index a9e5113759d1c1ebba674adef652c4a68d7cd63b..4bb2c2a27b8e8fe2779843aabe9342aea85fffc7 100644
--- a/LayoutTests/fast/eventsource/eventsource-constructor-expected.txt
+++ b/LayoutTests/fast/eventsource/eventsource-constructor-expected.txt
@@ -3,9 +3,9 @@ CONSOLE ERROR: Refused to connect to 'http://disallowed.example.com/' because it
 Test EventSource constructor functionality. Should print a series of PASS messages followed by DONE.
 
 PASS: missing argument to EventSource constructor resulted in an exception (TypeError: Failed to execute 'Constructor' on 'EventSource': 1 argument required, but only 0 present.)
-PASS: passing an empty string to the EventSource constructor resulted in an exception (SyntaxError: Cannot open an EventSource to an empty URL.)
-PASS: passing an invalid URL to the EventSource constructor resulted in an exception (SyntaxError: Cannot open an EventSource to 'http://webserver:eighty/'. The URL is invalid.)
-PASS: passing a Content-Security-Policy-blocked URL to the EventSource constructor resulted in an exception (SecurityError: Refused to connect to 'http://disallowed.example.com/' because it violates the document's Content Security Policy.)
+PASS: passing an empty string to the EventSource constructor resulted in an exception (SyntaxError: Failed to construct 'EventSource': Cannot open an EventSource to an empty URL.)
+PASS: passing an invalid URL to the EventSource constructor resulted in an exception (SyntaxError: Failed to construct 'EventSource': Cannot open an EventSource to 'http://webserver:eighty/'. The URL is invalid.)
+PASS: passing a Content-Security-Policy-blocked URL to the EventSource constructor resulted in an exception (SecurityError: Failed to construct 'EventSource': Refused to connect to 'http://disallowed.example.com/' because it violates the document's Content Security Policy.)
 PASS: no exception when passing a second argument to the EventSource constructor
 DONE