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Previously the animation clock was only frozen during animation frame
callbacks. This meant that the timeline was able to advance during other
tasks.

This patch allows the clock to advance once per task, either to the
compositor supplied frame start time or to an approximation of the next
expected frame time.

http://dev.w3.org/fxtf/web-animations/#script-execution-and-live-updates-to-the-model

This is a reland of r173583[1], the previous patch hit added assertions
due to double rounding issues, the new approach avoids these. Also ensures
that other unit tests see a non-zero currentTime (seen in some webkit_unit_test
runs on Android).

[1] https://src.chromium.org/viewvc/blink?view=rev&revision=173583
BUG=367903
TBR=abarth

Review URL: https://codereview.chromium.org/275753002

git-svn-id: svn://svn.chromium.org/blink/trunk@173729 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173673

BUG=361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/276863002

git-svn-id: svn://svn.chromium.org/blink/trunk@173728 bbb929c8-8fbe-4397-9dbb-9b2b20218538

As part of the picture specification, the source element gets added with several new attributes, that are used in HTMLImageElement's source selection algorithm.
This CL adds these attributes.

BUG=368830

Review URL: https://codereview.chromium.org/267693002

git-svn-id: svn://svn.chromium.org/blink/trunk@173727 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173673

BUG=361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/275033002

git-svn-id: svn://svn.chromium.org/blink/trunk@173726 bbb929c8-8fbe-4397-9dbb-9b2b20218538

We don't allow on-heap allocations in the audio thread. We change AsyncAudioDecoder::decode so we won't allocate an AudioBuffer in the audio thread.

BUG=340522

Review URL: https://codereview.chromium.org/205173002

git-svn-id: svn://svn.chromium.org/blink/trunk@173725 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173673

BUG=361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/275763003

git-svn-id: svn://svn.chromium.org/blink/trunk@173724 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Replace FormAssociatedElement raw pointers with Member<>.

- Make FormAttributeTargetObserver GarbageCollectedFinalized in order to make
  FormAttributeTargetObserver::m_element traceable.
- Define a typedef for
  WillBeHeapVector<RawPtrWillBeMember<FormAssociatedElement>>. The raw name is
  long and the type is used in many places.

BUG=357163

Review URL: https://codereview.chromium.org/270823004

git-svn-id: svn://svn.chromium.org/blink/trunk@173723 bbb929c8-8fbe-4397-9dbb-9b2b20218538

TBR=enne@chromium.org
BUG=371698

Review URL: https://codereview.chromium.org/271033002

git-svn-id: svn://svn.chromium.org/blink/trunk@173722 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Reason for revert:
We still have open layer squashing bugs.

Original issue's description:
> Re-enable layer squashing
> 
> We've fixed all the know bugs. Hopefully this time it will stick. If you find
> that this CL caused a regression, please mark the bug as blocking
> http://crbug.com/365701
> 
> BUG=365701
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=173696

TBR=chrishtr@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=365701

Review URL: https://codereview.chromium.org/279703002

git-svn-id: svn://svn.chromium.org/blink/trunk@173721 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173673

BUG=361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/276843003

git-svn-id: svn://svn.chromium.org/blink/trunk@173720 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173673

BUG=361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/272913002

git-svn-id: svn://svn.chromium.org/blink/trunk@173719 bbb929c8-8fbe-4397-9dbb-9b2b20218538

See http://src.chromium.org/viewvc/blink?view=revision&revision=165278.
This changed behavior of ArrayBuffer allocation on OOM from crashing to
returning null. Add CRASH to keep old behavior.

BUG=357356

Review URL: https://codereview.chromium.org/242323003

git-svn-id: svn://svn.chromium.org/blink/trunk@173718 bbb929c8-8fbe-4397-9dbb-9b2b20218538

V8StringResource<T>::prepareBase was not a good name.
Because V8StringResource<T>::prepare added some additional checks depending
on T, I renamed them to "check", added the check to prepareBase and rename it
to "prepare". This is a refactoring CL and doesn't change the behavior.

BUG=NONE

Review URL: https://codereview.chromium.org/276613007

git-svn-id: svn://svn.chromium.org/blink/trunk@173717 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Test code is basically copied from falken@'s:
https://github.com/mattto/ServiceWorker/tree/master/examples/layout-tests
(minus one obsolete FIXME, plus another FIXME)

BUG=366538
TEST=http/tests/serviceworker/current-on-load.html
TEST=http/tests/serviceworker/current-on-reload.html

Review URL: https://codereview.chromium.org/265943003

git-svn-id: svn://svn.chromium.org/blink/trunk@173716 bbb929c8-8fbe-4397-9dbb-9b2b20218538

TBR=enne@chromium.org
BUG=371651

git-svn-id: svn://svn.chromium.org/blink/trunk@173715 bbb929c8-8fbe-4397-9dbb-9b2b20218538

BUG=371680
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/272903002

git-svn-id: svn://svn.chromium.org/blink/trunk@173714 bbb929c8-8fbe-4397-9dbb-9b2b20218538

The new width of table was not being applied when changed dynamically
even though the table-layout is fixed.

On calculating whether we need to set the m_tableLayout as fixed or
auto the change in layout parameters such as width, height etc was
not considered hence the right layout type was not being set. Incase
there are any layout changes we need to see whether m_tableLayout
needs to be changed or not.

R=jchaffraix@chromium.org
BUG=239421

Review URL: https://codereview.chromium.org/264283002

git-svn-id: svn://svn.chromium.org/blink/trunk@173713 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173673

BUG=361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/276763004

git-svn-id: svn://svn.chromium.org/blink/trunk@173712 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Resource::revalidationSucceeded ASSERTs that the resource exists in the
memory cache. But the assumption is not correct because an ongoing revalidation
request can be evicted by the reloading request for the same URL.
Because no one relies on the assumption, the assert can be deleted.

BUG=370792
R=japhet@chromium.org

Review URL: https://codereview.chromium.org/268743003

git-svn-id: svn://svn.chromium.org/blink/trunk@173711 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Oilpan: Prepare to move FormController and DocumentState to Oilpan heap, and remove RefPtrs to HTMLFormControlElement and HTMLFormControlElementWithState.

Note: ValidationMessage has a raw pointer member to HTMLFormControlElement. This
CL doesn't make it traceable because a CL to remove ValidationMessage class is
in-progress. A ValidationMessage object is owned by the HTMLFormControlElement
object and the raw pointer is safe.

BUG=357163

Review URL: https://codereview.chromium.org/277753003

git-svn-id: svn://svn.chromium.org/blink/trunk@173710 bbb929c8-8fbe-4397-9dbb-9b2b20218538

If you squash on to your compositing container, you'll draw in the wrong order
because you'll draw after other RenderLayers that come after you in paint order
into your compositing container.

R=chrishtr@chromium.org
BUG=370862

Review URL: https://codereview.chromium.org/277763002

git-svn-id: svn://svn.chromium.org/blink/trunk@173709 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173673

BUG=361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/278763002

git-svn-id: svn://svn.chromium.org/blink/trunk@173708 bbb929c8-8fbe-4397-9dbb-9b2b20218538

TBR=enne@chromium.org
BUG=371651

Review URL: https://codereview.chromium.org/272893002

git-svn-id: svn://svn.chromium.org/blink/trunk@173707 bbb929c8-8fbe-4397-9dbb-9b2b20218538

This code is dead, we always pass a null parentLayer which causes us to
early return. I think we were supposed to call
childLayer->compositedLayerMapping()->childForSuperlayers()->removeFromParent()
in the original design, but since r44876 [1] we always early return when the
parentLayer is null, and that patch was back in 2009 so clearly the code
is not needed.

[1] http://src.chromium.org/viewvc/blink?revision=44876&view=revision

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/279643002

git-svn-id: svn://svn.chromium.org/blink/trunk@173705 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173673

BUG=361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/278743002

git-svn-id: svn://svn.chromium.org/blink/trunk@173704 bbb929c8-8fbe-4397-9dbb-9b2b20218538

SelectorChecker::parentElement should walk up to ShadowHost only if an element is in a shadow tree hosted by the ShadowHost and scope is the ShadowHost.

:host can only match shadow host. :host depends on context.scope with ScopeIsShadowHost behavior.
So only if context.scope is shadow host and context.element's shadow host is context.scope, we need to check the shadow host.

BUG=370303
TEST=fast/dom/shadow/style-with-cat.html, fast/dom/shadow/style-with-hat.html

Review URL: https://codereview.chromium.org/273523008

git-svn-id: svn://svn.chromium.org/blink/trunk@173703 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173673

BUG=361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/278733002

git-svn-id: svn://svn.chromium.org/blink/trunk@173702 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Revert "Build fix after r173654"

Reverts r173654 and r173655. Broke inspector/tracing-session-id.html.

TBR=yurys@chromium.org

Review URL: https://codereview.chromium.org/276793002

git-svn-id: svn://svn.chromium.org/blink/trunk@173701 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173673

BUG=361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/274983002

git-svn-id: svn://svn.chromium.org/blink/trunk@173700 bbb929c8-8fbe-4397-9dbb-9b2b20218538

The original patch was reverted in r173234, because the chagne exposed
a hidden bug of SVG fonts (crbug.com/369633). That bug is being addressed
in https://codereview.chromium.org/271633002/ so I'm relanding this patch.

BUG=369633

> Make CSSFontFace::willUseFontData() load fonts with unicode-range
>
> Before this patch CSSFontFace::willUseFontData() loads font faces that
> have no unicode-range. Since font faces with no unicode-range tends to
> be used as fallback font of segmented font family, this behavior leads
> to unnecessary font downloads.
>
> This patch makes willUseFontData() loads the first unloaded font face
> whose unicode-range intersects with given text. That check does not
> need to be 100% precise (false negative is ok), so it only checks the
> first character of the text, for speed.
>
> TEST=fast/css/font-face-unicode-range-overlap-load.html
> BUG=247920, 246492
>
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=172943

Review URL: https://codereview.chromium.org/270813003

git-svn-id: svn://svn.chromium.org/blink/trunk@173699 bbb929c8-8fbe-4397-9dbb-9b2b20218538

-Add flaky tests from https://codereview.chromium.org/262963003.
A revert would be tricky.
-Rebaseline fast/transforms/shadows.html as a followup to
https://codereview.chromium.org/279513002.
-Add a flaky imports test.

TBR=loislo@chromium.org,enne@chromium.org,morrita@chromium.org

Review URL: https://codereview.chromium.org/279663002

git-svn-id: svn://svn.chromium.org/blink/trunk@173698 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173666

BUG=369609
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/278623003

git-svn-id: svn://svn.chromium.org/blink/trunk@173697 bbb929c8-8fbe-4397-9dbb-9b2b20218538

We've fixed all the know bugs. Hopefully this time it will stick. If you find
that this CL caused a regression, please mark the bug as blocking
http://crbug.com/365701

BUG=365701

Review URL: https://codereview.chromium.org/267343005

git-svn-id: svn://svn.chromium.org/blink/trunk@173696 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173666

BUG=369609
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/272063002

git-svn-id: svn://svn.chromium.org/blink/trunk@173695 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173666

BUG=369609
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/276803002

git-svn-id: svn://svn.chromium.org/blink/trunk@173694 bbb929c8-8fbe-4397-9dbb-9b2b20218538

This test was added in http://src.chromium.org/viewvc/blink?revision=173653&view=revision.
Adam tells me it's fine to rebaseline.

TBR=abarth@chromium.org

Review URL: https://codereview.chromium.org/274963002

git-svn-id: svn://svn.chromium.org/blink/trunk@173693 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173666

BUG=369609
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/275663002

git-svn-id: svn://svn.chromium.org/blink/trunk@173692 bbb929c8-8fbe-4397-9dbb-9b2b20218538

In particular, allow a layer L to squash if their clipping
ancestor differs from the squashing owner, but the clipping
ancestor for L is a descendant of a layer that does squash
into the squashing owner.

BUG=368410

Review URL: https://codereview.chromium.org/264013002

git-svn-id: svn://svn.chromium.org/blink/trunk@173690 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Also moved the testing for invalid values from
AudioContext::createBuffer to AudioBuffer::create, which knows what
the valid ranges are instead of having the tests in both
AudioBuffer::create and AudioContext::createBuffer.

Test case added for createBuffer(0,...).

BUG=362657

Review URL: https://codereview.chromium.org/235653002

git-svn-id: svn://svn.chromium.org/blink/trunk@173689 bbb929c8-8fbe-4397-9dbb-9b2b20218538

http://src.chromium.org/viewvc/blink?view=revision&revision=173661

BUG=371111,361729
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/273923002

git-svn-id: svn://svn.chromium.org/blink/trunk@173688 bbb929c8-8fbe-4397-9dbb-9b2b20218538