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Bug 1379762 part 1. Don't call MediaFeaturesChanged if our override device pixel ratio is set to its current value

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Issue #357
This commit is contained in:
janekptacijarabaci 2018-05-15 21:14:18 +02:00 • committed by Roy Tam
commit eb80674e82
4 changed files with 44 additions and 5 deletions
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32
docshell/test/navigation/file_bug1379762-1.html Normal file
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@ -0,0 +1,32 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Bug 1379762</title>
</head>
<img srcset> <!-- This tries to add load blockers during bfcache restoration -->
<script>
onunload = null; // enable bfcache
opener.is(opener.testCount, 0,
"We should only run once; otherwise the loadCount variable makes no sense");
var loadCount = 0;
onpageshow = function() {
++opener.testCount;
if (opener.testCount == 1) {
// Navigate forward and then back.
setTimeout(function() { location = "goback.html"; }, 0);
} else if (opener.testCount == 2) {
// Do this async so our load event gets a chance to fire if it plans to
// do it.
setTimeout(function() {
opener.nextTest();
window.close();
});
}
};
onload = function() {
++loadCount;
opener.is(loadCount, 1, "Should only get one onload");
}
</script>
</html>

1
docshell/test/navigation/mochitest.ini
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@ -59,6 +59,7 @@ skip-if = (toolkit == 'android') || (!debug && (os == 'mac' || os == 'win')) # B
skip-if = (toolkit == 'android') || (debug && e10s) #too slow on Android 4.3 aws only; bug 1030403; bug 1263213 for debug e10s skip-if = (toolkit == 'android') || (debug && e10s) #too slow on Android 4.3 aws only; bug 1030403; bug 1263213 for debug e10s
[test_sessionhistory.html] [test_sessionhistory.html]
skip-if = toolkit == 'android' #RANDOM skip-if = toolkit == 'android' #RANDOM
support-files = file_bug1379762-1.html
[test_sibling-matching-parent.html] [test_sibling-matching-parent.html]
[test_sibling-off-domain.html] [test_sibling-off-domain.html]
[test_triggeringprincipal_frame_nav.html] [test_triggeringprincipal_frame_nav.html]

3
docshell/test/navigation/test_sessionhistory.html
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@ -31,7 +31,8 @@ var testFiles =
"file_nested_frames.html", "file_nested_frames.html",
"file_shiftReload_and_pushState.html", "file_shiftReload_and_pushState.html",
"file_scrollRestoration.html", "file_scrollRestoration.html",
"file_bug1300461.html" "file_bug1300461.html",
"file_bug1379762-1.html",
]; ];
var testCount = 0; // Used by the test files. var testCount = 0; // Used by the test files.

11
layout/base/nsPresContext.cpp
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@ -1307,10 +1307,15 @@ nsPresContext::SetFullZoom(float aZoom)
void void
nsPresContext::SetOverrideDPPX(float aDPPX) nsPresContext::SetOverrideDPPX(float aDPPX)
{ {
mOverrideDPPX = aDPPX; // SetOverrideDPPX is called during navigations, including history
// traversals. In that case, it's typically called with our current value,
// and we don't need to actually do anything.
if (aDPPX != mOverrideDPPX) {
mOverrideDPPX = aDPPX;
if (HasCachedStyleData()) { if (HasCachedStyleData()) {
MediaFeatureValuesChanged(nsRestyleHint(0), nsChangeHint(0)); MediaFeatureValuesChanged(nsRestyleHint(0), nsChangeHint(0));
}
} }
} }