update for 52.6.0

disable-reader.patch

@@ -27,7 +27,7 @@
    ["RecentWindow", "resource:///modules/RecentWindow.jsm"],
    ["SessionStore", "resource:///modules/sessionstore/SessionStore.jsm"],
    ["ShortcutUtils", "resource://gre/modules/ShortcutUtils.jsm"],
-@@ -4576,7 +4574,6 @@ var XULBrowserWindow = {
+@@ -4582,7 +4580,6 @@ var XULBrowserWindow = {
        }
      }
      UpdateBackForwardCommands(gBrowser.webNavigation);
@@ -35,7 +35,7 @@
  
      gGestureSupport.restoreRotationState();
  
-@@ -4877,9 +4874,6 @@ var TabsProgressListener = {
+@@ -4883,9 +4880,6 @@ var TabsProgressListener = {
      // Filter out location changes caused by anchor navigation
      // or history.push/pop/replaceState.
      if (aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT) {
@@ -47,7 +47,7 @@
  
 --- a/browser/base/content/browser.xul
 +++ b/browser/base/content/browser.xul
-@@ -759,10 +759,6 @@
+@@ -766,10 +766,6 @@
                         hidden="true"
                         tooltiptext="&pageReportIcon.tooltip;"
                         onmousedown="gPopupBlockerObserver.onReportButtonMousedown(event);"/>

mitigate-spectre.patch

@@ -1,18 +1,3 @@
---- a/dom/performance/Performance.cpp
-+++ b/dom/performance/Performance.cpp
-@@ -228,10 +228,10 @@ Performance::ClearResourceTimings()
- DOMHighResTimeStamp
- Performance::RoundTime(double aTime) const
- {
--  // Round down to the nearest 5us, because if the timer is too accurate people
-+  // Round down to the nearest 20us, because if the timer is too accurate people
-   // can do nasty timing attacks with it.  See similar code in the worker
-   // Performance implementation.
--  const double maxResolutionMs = 0.005;
-+  const double maxResolutionMs = 0.020;
-   return floor(aTime / maxResolutionMs) * maxResolutionMs;
- }
- 
 --- a/modules/libpref/init/all.js
 +++ b/modules/libpref/init/all.js
 @@ -1284,12 +1284,7 @@ pref("javascript.options.mem.gc_max_empty_chunk_count", 30);