Bug 1746679 Comment 16 Edit History

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Original comment by
on 
I honestly don't know. This the logs I got
```
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting fallback case.
[Child 83425: Main Thread]: E/nsResistFingerprinting Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel) with NULL channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting fallback case.
[Child 83425: Main Thread]: E/nsResistFingerprinting Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel) with NULL channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting fallback case.
[Child 83425: Main Thread]: E/nsResistFingerprinting Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel) with NULL channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting with URI file:///.../sample.pdf channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside ShouldResistFingerprinting(nsIChannel*) CookieJarSettingsSaysShouldResistFingerprinting said true
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting with URI file:///.../sample.pdf channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside ShouldResistFingerprinting(nsIChannel*) CookieJarSettingsSaysShouldResistFingerprinting said true
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
```

RecomputeResistFingerprinting uses the fallback if/else branch for some documents but I don't know which document that is. It might be pdfjs, and if it is we just do a coarse check and return without any calls to SchemeSaysShouldNotResistFingfgerprintg
Revision 1 by
on 
I honestly don't know. This the logs I got
```
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting fallback case.
[Child 83425: Main Thread]: E/nsResistFingerprinting Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel) with NULL channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting fallback case.
[Child 83425: Main Thread]: E/nsResistFingerprinting Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel) with NULL channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting fallback case.
[Child 83425: Main Thread]: E/nsResistFingerprinting Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel) with NULL channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting with URI file:///.../sample.pdf channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside ShouldResistFingerprinting(nsIChannel*) CookieJarSettingsSaysShouldResistFingerprinting said true
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting with URI file:///.../sample.pdf channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside ShouldResistFingerprinting(nsIChannel*) CookieJarSettingsSaysShouldResistFingerprinting said true
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
```

RecomputeResistFingerprinting uses the fallback if/else branch for some documents but I don't know which document that is. It might be pdfjs, and if it is we just do a coarse check and return without any calls to SchemeSaysShouldNotResistFingerprinting
Revision 2 by
on 
I honestly don't know. This is the log I got
```
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting fallback case.
[Child 83425: Main Thread]: E/nsResistFingerprinting Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel) with NULL channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting fallback case.
[Child 83425: Main Thread]: E/nsResistFingerprinting Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel) with NULL channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting fallback case.
[Child 83425: Main Thread]: E/nsResistFingerprinting Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel) with NULL channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting with URI file:///.../sample.pdf channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside ShouldResistFingerprinting(nsIChannel*) CookieJarSettingsSaysShouldResistFingerprinting said true
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside RecomputeResistFingerprinting with URI file:///.../sample.pdf channel
[Child 83425: Main Thread]: E/nsResistFingerprinting Inside ShouldResistFingerprinting(nsIChannel*) CookieJarSettingsSaysShouldResistFingerprinting said true
[Child 83425: Main Thread]: E/nsResistFingerprinting Finished RecomputeResistFingerprinting with result 1
```

RecomputeResistFingerprinting uses the fallback if/else branch for some documents but I don't know what they are. They might be pdfjs, and if they are we just do a coarse check and return without any calls to SchemeSaysShouldNotResistFingerprinting

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