WIP: Migrate generated bindings to new ExceptionState constructor.

LayoutTests/fast/files/workers/worker-read-file-sync-expected.txt

Index: LayoutTests/fast/files/workers/worker-read-file-sync-expected.txt
diff --git a/LayoutTests/fast/files/workers/worker-read-file-sync-expected.txt b/LayoutTests/fast/files/workers/worker-read-file-sync-expected.txt
index 43813ba561c21a42d9dc2ad063a293b8fd478f7e..74e9ffdc327610bfd0fdee8cd2c494120f85da1a 100644
--- a/LayoutTests/fast/files/workers/worker-read-file-sync-expected.txt
+++ b/LayoutTests/fast/files/workers/worker-read-file-sync-expected.txt
@@ -1,81 +1,81 @@
 
 Received files in worker
 Test reading a non-existent file as array buffer
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsArrayBuffer' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsArrayBuffer' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a non-existent file as binary string
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsBinaryString' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsBinaryString' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a non-existent file as text
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsText' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsText' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a non-existent file as data URL
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsDataURL' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsDataURL' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading an empty file as array buffer
 result size: 0
 result: 
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsArrayBuffer' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading an empty file as binary string
 result size: 0
 result: 
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsBinaryString' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading an empty file as text
 result size: 0
 result: 
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsText' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading an empty file as data URL
 result size: 5
 result: data:
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsDataURL' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a UTF-8 file as array buffer
 result size: 5
 result: Hello
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsArrayBuffer' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a UTF-8 file as binary string
 result size: 5
 result: Hello
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsBinaryString' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a binary file as array buffer
 result size: 9
 result: 0x0 0x1 0x2 0x80 0x81 0x82 0xfd 0xfe 0xff
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsArrayBuffer' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a binary file as binary string
 result size: 9
 result: 0x0 0x1 0x2 0x80 0x81 0x82 0xfd 0xfe 0xff
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsBinaryString' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a UTF-8 file as text
 result size: 5
 result: Hello
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsText' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a UTF-16BE BOM file as text
 result size: 5
 result: Hello
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsText' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a UTF-16LE BOM file as text
 result size: 5
 result: Hello
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsText' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a UTF-8 BOM file as text
 result size: 5
 result: Hello
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsText' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a UTF-16BE file as text with UTF-16BE encoding
 result size: 5
 result: Hello
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsText' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a UTF-16BE BOM file as text with UTF8 encoding
 result size: 5
 result: Hello
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsText' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a UTF-16BE BOM file as text with invalid encoding
 result size: 5
 result: Hello
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsText' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test reading a UTF-8 file as data URL
 result size: 31
 result: data:text/plain;base64,SGVsbG8=
-Received exception, name: NotFoundError, message: A requested file or directory could not be found at the time an operation was processed.
+Received exception, name: NotFoundError, message: Failed to execute 'readAsDataURL' on 'FileReaderSync': A requested file or directory could not be found at the time an operation was processed.
 Test calling multiple read methods in a row
 result size: 5
 result: Hello