Replace streams tests with automatically-imported ones

third_party/WebKit/LayoutTests/imported/wpt/streams/readable-streams/pipe-through.https-expected.txt

Index: third_party/WebKit/LayoutTests/imported/wpt/streams/readable-streams/pipe-through.https-expected.txt
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/streams/readable-streams/pipe-through.https-expected.txt b/third_party/WebKit/LayoutTests/imported/wpt/streams/readable-streams/pipe-through.https-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6b77d2048799b34128ea7ef4d3ccdd85bedfc6fe
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/imported/wpt/streams/readable-streams/pipe-through.https-expected.txt
@@ -0,0 +1,24 @@
+This is a testharness.js-based test.
+FAIL ReadableStream.prototype.pipeThrough should work generically on its this and its arguments Cannot read property 'call' of undefined
+PASS ReadableStream.prototype.pipeThrough should throw when its first argument is not convertible to an object 

[Adam Rice, 2016/11/15 06:55:42]

This should not pass. We should modify methodThrows() to assert that the method
is not undefined. Is it possible to do this directly upstream?

Edit: Another point of view is that since another test already verifies that
pipeThrough exists, it would be over-testing to also assert it here.

+PASS ReadableStream.prototype.pipeThrough should throw when "this" has no pipeTo method 
+FAIL ReadableStream.prototype.pipeThrough should rethrow errors from accessing pipeTo, readable, or writable assert_throws: pipeThrough should rethrow the error thrown by pipeTo function "() => ReadableStream.prototype.pipeThrough.call(throwingPipeTo, { readable: { }, writable: { } }, {})" threw object "TypeError: Cannot read property 'call' of undefined" ("TypeError") expected object "Error: potato" ("Error")
+FAIL ReadableStream.prototype.pipeThrough should work with missing readable, writable, or options Cannot read property 'call' of undefined
+PASS Untitled 
+FAIL ReadableStream.prototype.pipeThrough should work generically on its this and its arguments Cannot read property 'call' of undefined
+PASS ReadableStream.prototype.pipeThrough should throw when its first argument is not convertible to an object 
+PASS ReadableStream.prototype.pipeThrough should throw when "this" has no pipeTo method 
+FAIL ReadableStream.prototype.pipeThrough should rethrow errors from accessing pipeTo, readable, or writable assert_throws: pipeThrough should rethrow the error thrown by pipeTo function "() => ReadableStream.prototype.pipeThrough.call(throwingPipeTo, { readable: { }, writable: { } }, {})" threw object "TypeError: Cannot read property 'call' of undefined" ("TypeError") expected object "Error: potato" ("Error")
+FAIL ReadableStream.prototype.pipeThrough should work with missing readable, writable, or options Cannot read property 'call' of undefined
+FAIL ReadableStream.prototype.pipeThrough should work generically on its this and its arguments Cannot read property 'call' of undefined
+PASS ReadableStream.prototype.pipeThrough should throw when its first argument is not convertible to an object 
+PASS ReadableStream.prototype.pipeThrough should throw when "this" has no pipeTo method 
+FAIL ReadableStream.prototype.pipeThrough should rethrow errors from accessing pipeTo, readable, or writable assert_throws: pipeThrough should rethrow the error thrown by pipeTo function "() => ReadableStream.prototype.pipeThrough.call(throwingPipeTo, { readable: { }, writable: { } }, {})" threw object "TypeError: Cannot read property 'call' of undefined" ("TypeError") expected object "Error: potato" ("Error")
+FAIL ReadableStream.prototype.pipeThrough should work with missing readable, writable, or options Cannot read property 'call' of undefined
+FAIL ReadableStream.prototype.pipeThrough should work generically on its this and its arguments Cannot read property 'call' of undefined
+PASS ReadableStream.prototype.pipeThrough should throw when its first argument is not convertible to an object 
+PASS ReadableStream.prototype.pipeThrough should throw when "this" has no pipeTo method 
+FAIL ReadableStream.prototype.pipeThrough should rethrow errors from accessing pipeTo, readable, or writable assert_throws: pipeThrough should rethrow the error thrown by pipeTo function "() => ReadableStream.prototype.pipeThrough.call(throwingPipeTo, { readable: { }, writable: { } }, {})" threw object "TypeError: Cannot read property 'call' of undefined" ("TypeError") expected object "Error: potato" ("Error")
+FAIL ReadableStream.prototype.pipeThrough should work with missing readable, writable, or options Cannot read property 'call' of undefined
+Harness: the test ran to completion.
+