[CSS Blending] Fix isolation for the hardware path.
For "isolation:isolate" with accelerated elements, an ASSERT was
triggered in RenderLayerCompositor::subtreeReasonsForCompositing.
This was caused by errorneously including |hasIsolation| to RenderObject::CreateGroup.
Also, removing the comment from the method since it is misleading.

BUG=229615

Review URL: https://codereview.chromium.org/77723004

git-svn-id: svn://svn.chromium.org/blink/trunk@162360 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Revert 162344 "NoOp Document::open shouldn't be reported to Insp..."

The test added by this patch is flakey. It appears to be timing
out or terminating early.

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20Blink&showExpectations=true&tests=http%2Ftests%2Finspector%2Fresource-tree%2Fresource-tree-write-to-open-document.html

> NoOp Document::open shouldn't be reported to Inspector.
> 
> Otherwise Inspector erroneously thinks that frame was navigated.
> 
> BUG=315618
> 
> Review URL: https://codereview.chromium.org/61643008

TBR=eustas@chromium.org

Review URL: https://codereview.chromium.org/78433002

git-svn-id: svn://svn.chromium.org/blink/trunk@162361 bbb929c8-8fbe-4397-9dbb-9b2b20218538
File constructor understands lastModified.

BUG=164933

Review URL: https://codereview.chromium.org/74213009

git-svn-id: svn://svn.chromium.org/blink/trunk@162362 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Revert 162315 "Don't cancel form submissions for other frames if..."

The test added here is flakey on all the bots.
http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=http%2Ftests%2Fmisc%2Fform-target-iframe-inline-location-change.html

> Don't cancel form submissions for other frames if this frame changes location.
> 
> If a form which specifies a target is submitted via javascript, and a location
> change is scheduled before the form submission fires, the form submission will
> be cancelled, even though the location change is completely orthogonal. This
> patch ensures we cancel a form submission without a target specified, but not
> one targeted elsewhere.
> 
> BUG=319281
> TEST=http/tests/misc/form-target-iframe-inline-location-change.html
> 
> Review URL: https://codereview.chromium.org/67693003

TBR=japhet@chromium.org

Review URL: https://codereview.chromium.org/78443002

git-svn-id: svn://svn.chromium.org/blink/trunk@162363 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Added InvalidAccessError exception

Platform support for this exception is missing and is needed in order
to be compliant with Clearkey tests of Youtube's MSE/EME conformance suite.

Test suite: http://yt-dash-mse-test.commondatastorage.googleapis.com/unit-tests/main.html

BUG=

Review URL: https://codereview.chromium.org/62543003

git-svn-id: svn://svn.chromium.org/blink/trunk@162364 bbb929c8-8fbe-4397-9dbb-9b2b20218538