Test fragment scrolling and history restoration interaction w/ scroll anchoring.

third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in

 // http://dev.chromium.org/blink/runtime-enabled-features
 //
 // This list is used to generate RuntimeEnabledFeatures.h/cpp which contains
 // a class that stores static enablers for all experimental features.
 //
 // Each feature can be assigned a "status":
 // status=stable -> Enable this in all Blink configurations.  We are committed to these APIs indefinitely.
 // status=experimental -> In-progress features, Web Developers might play with, but are not on by default in stable.
 // status=test -> Enabled in ContentShell for testing, otherwise off.
 // Features without a status are not enabled anywhere by default.
 //
 // "implied_by" or "depends_on" specifies relationship to other features:
 // implied_by=feature1[,feature2,...] -> The feature is automatically enabled if any implied_by features is enabled;
 // depends_on=feature1[,feature2,...] -> The feature is enabled only if all depends_on features are enabled.
 // Only one of "implied_by" and "depends_on" can be specified.
 //
 // "stable" features listed here should be rare, as anything which we've shipped stable
 // can have its runtime flag removed soon after.
 //
 // origin_trial_feature_name=FEATURE_NAME is used to integrate the feature with the experimental framework, so that the
 // feature can be enabled at runtime on a per-page basis through a signed token for the corresponding feature name.
 // Declaring the origin_trial_feature_name will cause a static method to be generated in OriginTrials.h/cpp. This static
 // method allows the feature implementation to check if it is enabled for the current context.
+//
+// set_from_internals specifies whether or not a feture can be set from core/testing/Internals.h/cpp, with the default

[wkorman, 2016/04/26 19:01:18]

whether a feature (remove 'or not', fix typo in 'feture')

Since in the end people will be using internals.runtimeFlags in JS to set it
maybe referencing that rather than the path to Internals.h/cpp is more useful?

[ymalik, 2016/04/26 20:17:39]

Ah thanks! Done.

+// being false.
 
 AppBanner status=stable
 AlwaysUseComplexText status=stable
 ApplicationCache status=stable
 AudioOutputDevices status=stable
 AudioVideoTracks status=experimental
 BackgroundSync status=stable
 BackspaceDefaultHandler status=test
 CacheIgnoreSearchOption status=experimental
 Canvas2dImageChromium status=experimental
@@ skipping 132 matching lines @@
 RemotePlayback status=experimental
 RenderingPipelineThrottling status=experimental
 RequestIdleCallback status=stable
 RequestAutocomplete status=test
 ResponseConstructedWithReadableStream status=experimental
 ResponseBodyWithV8ExtraStream status=experimental
 SandboxBlocksModals status=stable
 ScreenOrientation status=stable
 ScriptedSpeech status=stable
 // Scrolls to compensate for layout movements (bit.ly/scroll-anchoring).
-ScrollAnchoring
+ScrollAnchoring set_from_internals=True
 // Implements documentElement.scrollTop/Left and bodyElement.scrollTop/Left
 // as per the spec, matching other Web engines.
 ScrollTopLeftInterop status=experimental
 ServiceWorkerClientAttributes status=stable
 ServiceWorkerClientsGetID status=stable
 ServiceWorkerWindowClientNavigate status=stable
 ShadowDOMV1 status=experimental
 SharedArrayBuffer
 SharedWorker status=stable
 SlimmingPaintInvalidation
@@ skipping 35 matching lines @@
 VisibilityChangeOnUnload status=experimental
 XSLT status=stable
 smil status=stable
 ScrollCustomization
 ScrollRestoration status=stable
 VisualViewportAPI status=experimental
 WakeLock status=experimental
 WebFontsInterventionV2
 WebFontsInterventionTrigger
 Worklet status=test