Thanks for the report.

Considering this as Feature request, marking as Untriaged and requesting Dev team to look into the issue.

Extensions can already do this by injecting * { animation: none !important; transition: none !important; } into pages.

We can certainly facilitate this on the animations side of the code but I'll pass it on to extensions to decide whether this is a feature we wish to add support for.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6c7269bdd0808219c799e9b60f8470618c6e7986

commit 6c7269bdd0808219c799e9b60f8470618c6e7986
Author: amalika <amalika@google.com>
Date: Thu Dec 08 13:57:37 2016

Part 3.7: Is policy list subsumed under subsuming policy?

This is part of an experimental feature Embedding-CSP.
In this particular CL, we add support for a keyword source expression
`strict-dynamic`. Consideration points:
- We should not consider `self` or `unsafe-inline` when `strict-dynamic`
is present
- We should not consider host/scheme source expressions
- We honor nonce/hash source expressions.
- If B has `strict-dynamic`, then it must be that A has it too. Otherwise,
A does not subsume B.

BUG=647688

Review-Url: https://codereview.chromium.org/2551873003
Cr-Commit-Position: refs/heads/master@{#437236}

[modify] https://crrev.com/6c7269bdd0808219c799e9b60f8470618c6e7986/third_party/WebKit/Source/core/frame/csp/SourceListDirective.cpp
[modify] https://crrev.com/6c7269bdd0808219c799e9b60f8470618c6e7986/third_party/WebKit/Source/core/frame/csp/SourceListDirectiveTest.cpp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0ff1c62147403c78af7be4edaec99a544bf15987

commit 0ff1c62147403c78af7be4edaec99a544bf15987
Author: amalika <amalika@google.com>
Date: Thu Dec 08 18:58:11 2016

Part 3.8: Is policy list subsumed under subsuming policy?

This CL (finally) considers list wildcards. For example:
A = *
B = ftp: http: https: ws: wss:

A subsumes B.

However,
if B is "ftp: http: https: ws: wss: 'unsafe-inline'", then A does not
subsume B because `unsafe-inline` is not allowed by A.

BUG=647688

Review-Url: https://codereview.chromium.org/2555153002
Cr-Commit-Position: refs/heads/master@{#437298}

[modify] https://crrev.com/0ff1c62147403c78af7be4edaec99a544bf15987/third_party/WebKit/Source/core/frame/csp/CSPSource.h
[modify] https://crrev.com/0ff1c62147403c78af7be4edaec99a544bf15987/third_party/WebKit/Source/core/frame/csp/SourceListDirective.cpp
[modify] https://crrev.com/0ff1c62147403c78af7be4edaec99a544bf15987/third_party/WebKit/Source/core/frame/csp/SourceListDirective.h
[modify] https://crrev.com/0ff1c62147403c78af7be4edaec99a544bf15987/third_party/WebKit/Source/core/frame/csp/SourceListDirectiveTest.cpp

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

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