The name of the test class and method as well as the @covers tags already
explain well enough which code a test is testing. Repeating this does not
provide additional information.
Change-Id: Ieec4ec131e5925d11704a11e1df46bc00c9fad9b
If the curl extension is not available, fall back to the existing
HttpRequestFactory and associated classes. Also added related phpunit tests.
Bug: T139169
Change-Id: I2f9d4acbb491bce28d7105e124c5cee7e16e86d7