<dev> Do not close tab when disconnect MozReview-Commit-ID: 936Bi6ah7OC

<dev> Enable presentation API on Fennec MozReview-Commit-ID: p6tlE4289u

<dev> Change the URLs of suggested sites MozReview-Commit-ID: JtPNLCQPZYx

<dev> Enable pref: draw-fps MozReview-Commit-ID: 4KO7BayEIS4

Bug 1299876 - Part 1. Inflate bbox by stroke used value of the target frame. MozReview-Commit-ID: Et9SvNS4M6h

Bug 1306186. Part 6 - check if we can stop prerolling in the entry action of DecodingState. Chances are we've decoded enough data when entering DecodingState. Otherwis we will never start playback. MozReview-Commit-ID: AMdd4xxQt6c

Bug 1304922 - Part 12: Add move assignment operator for StyleAnimationValue. r?birtles MozReview-Commit-ID: dvAx8eViRR

Bug 1304922 - Part 11: Don't use StyleAnimationValue after moving it. r?birltes MozReview-Commit-ID: Bqei8XSb0wV

Bug 1304922 - Part 10: Drop non-const version of KeyframeEffectReadOnly::Properties(). r?birtles We no longer modify AnimationProperty outside KeyframeEffectReadOnly class. MozReview-Commit-ID: LaPyLxEBehn

Bug 1304922 - Part 9: Early return from FindAnimationsForCompositor() if we have neither transitions and animations level effect for a given property. r?birtles MozReview-Commit-ID: 9IAtKD0tIwc

Bug 1304922 - Part 8: Add a test case to check we don't request restyle for layer when cascading result for the property not running on the compositor is changed r?birtles Actually this test case does not pass for now, since we don't throttle animation properties running on the main thread overridden by important rules. But after part 6, we don't request restyle layer in the case when the cascading result of the property which is not running on the compositor is changed, so this test case is meaningful. MozReview-Commit-ID: 3RfL6tdAKP4

Bug 1304922 - Part 7: Drop mWinsInCascade. r?birtles MozReview-Commit-ID: 1q4glZenZNa

Bug 1304922 - Part 6: Introduce mPropertiesWithImportantRules and mPropertiesForAnimationsLevel and use it to detect conditions that we need to update layres. r?birtles This patch also makes composite order lowest to highest, as a result we also need to replace mWinsInCascade checks with the the properties. The mWinsInCascade membed itself will be removed in a subsequent patch. Now we call RequestRestyle(Layer) respectively for transition and animation, so a test case in test_restyles.html works as expected. And now lower-priority animations are also sent to the compositor so this patch fixed some tests in test_running_on_compositor.html and test_animation_performance_warning.html MozReview-Commit-ID: BchUsJbmatg

Bug 1304922 - Part 5: AnimValuesStyleRule::AddValue replaces the existence entry's mValue. r?birtles MozReview-Commit-ID: GqpUsXUZaHy

Bug 1304922 - Part 4: Add EffectSet::Count(). r?birtles MozReview-Commit-ID: DUaENL7A3eb

Bug 1304922 - Part 3: Request restyle for layer when CSS animation's index is changed. r?birtles In the case when the animation index is changed, we have to update the layer because the index affects composite order. Currently UpdateCascadeResult() does it but the function will check only which cascade level wins in the cascade level and request restyle only when the winner is changed, e.g. when a CSS animation overrides a CSS transition, etc. So we should call request restyle respectively when the index is changed inside each Animation class. MozReview-Commit-ID: 7KsABTfD01a

Bug 1304922 - Part 2: Sort animation array before sending animations to the compositor. r?birtles The result animatons of FindAnimationsForCompositor() should be sorted by composite order because SampleAnimations() on the compositor expects the animations are sorted by the order. MozReview-Commit-ID: LhciIosiuR0

Bug 1304922 - Part 1: Rename nsLayoutUtils::HasCurrentAnimationOfProperty() to nsLayoutUtils::HasActiveAnimationOfProperty(). r?birtles KeyframeEffectReadOnly::HasAnimationOfProperty() calls GetAnimationOfProperty() which checks mWinsInCascade flag and the mWinsInCascade flag is set to true only if the effect is in-effect. That means nsLayoutUtils::HasCurrentAnimationOfProperty() actually represents that a given frame has at least one animation which is current and *in-effect* (i.e. active). MozReview-Commit-ID: kHqSs3WvJ

Bug 1307049 - Remove nsCSSValueGradient.mIsLegacySyntax, remove support for -webkit-gradient; r?dholbert MozReview-Commit-ID: AejhUcgo2dJ

Bug 1299876 - Part 1. Inflate bbox by stroke used value of the target frame. MozReview-Commit-ID: Et9SvNS4M6h