[CSSRegions] Converted webkit-flow-inlines-inside-regions-bounds[-vertical] to reftests 
(port from https://bugs.webkit.org/show_bug.cgi?id=80712)
BUG=239025

Review URL: https://chromiumcodereview.appspot.com/15027012

git-svn-id: svn://svn.chromium.org/blink/trunk@150013 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Move SecurityOrigin into Source/origin

Now that SecuityOrigin's dependencies have been cleaned up, we can move it into
Source/origin. This CL completes the Source/origin module.

BUG=239181
R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/14791012

git-svn-id: svn://svn.chromium.org/blink/trunk@150014 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix file-reader-sandbox-iframe.html crash

https://src.chromium.org/viewvc/blink?revision=150011&view=revision dropped the
check for whether the protocolIs("blob"), which caused about five tests to
crash. This CL adds the check back and fixes those tests.

TBR=eseidel@chromium.org

Review URL: https://codereview.chromium.org/14697020

git-svn-id: svn://svn.chromium.org/blink/trunk@150015 bbb929c8-8fbe-4397-9dbb-9b2b20218538