Bug 1374315 - fix CSS overflow:hidden in overflow panel and page action panel to fix rounded corners, r=mikedeboer

MozReview-Commit-ID: B5lHCaAMvyu

--HG--
extra : rebase_source : 0eb5ac61a7eb2082d501a95919d06c49bcbb1c08

browser/base/content/browser.xul

@@ -446,6 +446,7 @@
            type="arrow"
            hidden="true"
            flip="slide"
+           photon="true"
            position="bottomcenter topright"
            tabspecific="true"
            noautofocus="true"

browser/components/customizableui/content/panelUI.inc.xul

@@ -349,6 +349,7 @@
        type="arrow"
        noautofocus="true"
        position="bottomcenter topright"
+       photon="true"
        hidden="true">
   <photonpanelmultiview mainViewId="widget-overflow-mainView">
     <panelview id="widget-overflow-mainView"

browser/themes/shared/customizableui/panelUI.inc.css

@@ -257,7 +257,6 @@ photonpanelmultiview .panel-subview-header {
 }
 
 #appMenu-popup > .panel-arrowcontainer > .panel-arrowcontent,
-#PanelUI-popup > .panel-arrowcontainer > .panel-arrowcontent,
 panel[photon] > .panel-arrowcontainer > .panel-arrowcontent {
   overflow: hidden;
 }
@@ -1693,8 +1692,6 @@ menuitem[checked="true"].subviewbutton > .menu-iconic-left {
 }
 
 .panel-mainview[panelid=customizationui-widget-panel],
-#customizationui-widget-multiview > .panel-viewcontainer,
-#customizationui-widget-multiview > .panel-viewcontainer > .panel-viewstack,
 #PanelUI-panicView > .panel-subview-body,
 #PanelUI-panicView {
   overflow: visible;
@@ -2034,10 +2031,6 @@ photonpanelmultiview .PanelUI-subView toolbarseparator {
   margin-inline-end: 0;
 }
 
-photonpanelmultiview#customizationui-widget-multiview > .panel-viewcontainer {
-  overflow: hidden;
-}
-
 /* This is explicitly overriding the overflow properties set above. */
 photonpanelmultiview .cui-widget-panelview {
   overflow-x: visible;