The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7c296ef28be57c85c6cc8f2f8d003e4ecc44c1ee

commit 7c296ef28be57c85c6cc8f2f8d003e4ecc44c1ee
Author: Piotr Swigon <piotrs@chromium.org>
Date: Tue Aug 29 04:32:00 2017

[WebApps] Introduces a flag for improved Splash Screens.

Adds a flag that will control the improved Splash Screen feature.

Bug: 759945
Change-Id: I0eb9b57fc9b4b67917951240a896093f83b4979c
Reviewed-on: https://chromium-review.googlesource.com/640274
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Commit-Queue: Piotr Swigon <piotrs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#498024}
[modify] https://crrev.com/7c296ef28be57c85c6cc8f2f8d003e4ecc44c1ee/chrome/browser/about_flags.cc
[modify] https://crrev.com/7c296ef28be57c85c6cc8f2f8d003e4ecc44c1ee/chrome/browser/android/chrome_feature_list.cc
[modify] https://crrev.com/7c296ef28be57c85c6cc8f2f8d003e4ecc44c1ee/chrome/browser/android/chrome_feature_list.h
[modify] https://crrev.com/7c296ef28be57c85c6cc8f2f8d003e4ecc44c1ee/chrome/browser/flag_descriptions.cc
[modify] https://crrev.com/7c296ef28be57c85c6cc8f2f8d003e4ecc44c1ee/chrome/browser/flag_descriptions.h
[modify] https://crrev.com/7c296ef28be57c85c6cc8f2f8d003e4ecc44c1ee/tools/metrics/histograms/enums.xml

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/22ab02c0f78249eda17b082ab7d852826d2b6a04

commit 22ab02c0f78249eda17b082ab7d852826d2b6a04
Author: Piotr Swigon <piotrs@chromium.org>
Date: Fri Nov 03 02:50:06 2017

[WebApps] Adds parsing of splash_screen_url attribute to ManifestParser.

This is a foundation for introducing HTML splash screens for Web Apps.
To avoid unnecessary duplication I pushed more logic into ParseURL method.

HTML splash screen were discussed here (Googlers only, sorry):
https://docs.google.com/document/d/1LLALh25-UkREqbr8qlMZIui09XEg3KU-OM4-an2989g/edit#

And on Web App Manifest github page here:
https://github.com/w3c/manifest/issues/589#issuecomment-323232119

Bug: 759945
Change-Id: I10e0a81e0822d45ea735403da68234ca18c66ffe
Reviewed-on: https://chromium-review.googlesource.com/737254
Commit-Queue: Piotr Swigon <piotrs@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/heads/master@{#513659}
[modify] https://crrev.com/22ab02c0f78249eda17b082ab7d852826d2b6a04/content/public/common/manifest.cc
[modify] https://crrev.com/22ab02c0f78249eda17b082ab7d852826d2b6a04/content/public/common/manifest.h
[modify] https://crrev.com/22ab02c0f78249eda17b082ab7d852826d2b6a04/content/public/common/manifest_struct_traits.cc
[modify] https://crrev.com/22ab02c0f78249eda17b082ab7d852826d2b6a04/content/public/common/manifest_struct_traits.h
[modify] https://crrev.com/22ab02c0f78249eda17b082ab7d852826d2b6a04/content/renderer/manifest/manifest_parser.cc
[modify] https://crrev.com/22ab02c0f78249eda17b082ab7d852826d2b6a04/content/renderer/manifest/manifest_parser.h
[modify] https://crrev.com/22ab02c0f78249eda17b082ab7d852826d2b6a04/content/renderer/manifest/manifest_parser_unittest.cc
[modify] https://crrev.com/22ab02c0f78249eda17b082ab7d852826d2b6a04/third_party/WebKit/public/platform/modules/manifest/manifest.mojom

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/98256a78627e834fd38f9ec635c560ef1be2a6f5

commit 98256a78627e834fd38f9ec635c560ef1be2a6f5
Author: Piotr Swigon <piotrs@chromium.org>
Date: Fri Nov 03 03:44:56 2017

[WebApps] Plumbs splash_screen_url from a Manifest to a WebappInfo.

This is just plumbing without intent to affect any user journey.

This patch explicitly does not target WebAPKs, only legacy web app flow for
now. WebAPKs will require plumbing through the minting server and checking
for updates, and will come at a later stage.

Bug: 759945
Change-Id: Ica35839ad68d6dece46266e4d9b37220f256893c
Reviewed-on: https://chromium-review.googlesource.com/737756
Commit-Queue: Piotr Swigon <piotrs@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#513669}
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/android/java/src/org/chromium/chrome/browser/ShortcutHelper.java
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkInfo.java
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappInfo.java
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappModeTest.java
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappVisibilityTest.java
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/android/junit/src/org/chromium/chrome/browser/webapps/WebappDataStorageTest.java
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/android/junit/src/org/chromium/chrome/browser/webapps/WebappInfoTest.java
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/browser/android/shortcut_helper.cc
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/browser/android/shortcut_info.cc
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/browser/android/shortcut_info.h
[modify] https://crrev.com/98256a78627e834fd38f9ec635c560ef1be2a6f5/chrome/browser/android/shortcut_info_unittest.cc

Unassigning myself, as I won't be able to finish this.

Here is my handoff doc, Googlers only, sorry:
https://docs.google.com/document/d/1rP-Q4sZXEJY2ICyHgoqJeS1omod43j_hl8vI2cNfQWo/edit

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.

Sorry for the inconvenience if the bug really should have been left as Available.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot