Issue 4580 - Replace ext.backgroundPage.sendMessage with runtime.sendMessage

include.preload.js

Index: include.preload.js
===================================================================
--- a/include.preload.js
+++ b/include.preload.js
@@ -160,17 +160,17 @@
   let mediatype = typeMap.get(element.localName);
   if (!mediatype)
     return;
 
   let urls = getURLsFromElement(element);
   if (urls.length == 0)
     return;
 
-  ext.backgroundPage.sendMessage(
+  chrome.runtime.sendMessage(
     {
       type: "filters.collapse",
       urls,
       mediatype,
       baseURL: document.location.href
     },
 
     collapse =>
@@ -182,17 +182,17 @@
     }
   );
 }
 
 function checkSitekey()
 {
   let attr = document.documentElement.getAttribute("data-adblockkey");
   if (attr)
-    ext.backgroundPage.sendMessage({type: "filters.addKey", token: attr});
+    chrome.runtime.sendMessage({type: "filters.addKey", token: attr});
 }
 
 function ElementHidingTracer()
 {
   this.selectors = [];
   this.changedNodes = [];
   this.timeout = null;
   this.observer = new MutationObserver(this.observe.bind(this));
@@ -243,17 +243,17 @@
             break nodes;
           }
         }
       }
     }
 
     if (selectors.length > 0 || filters.length > 0)
     {
-      ext.backgroundPage.sendMessage({
+      chrome.runtime.sendMessage({
         type: "devtools.traceElemHide",
         selectors, filters
       });
     }
   },
 
   onTimeout()
   {
@@ -447,44 +447,44 @@
       // the code below. See issue #5090.
       // Related Chrome and Firefox issues:
       // https://bugs.chromium.org/p/chromium/issues/detail?id=632009
       // https://bugzilla.mozilla.org/show_bug.cgi?id=1310026
       this.injectSelectors(selectors, filters);
     }
     else
     {
-      ext.backgroundPage.sendMessage({
+      chrome.runtime.sendMessage({
         type: "elemhide.injectSelectors",
         selectors
       });
     }
 
     if (this.tracer)
       this.tracer.addSelectors(selectors, filters);
   },
 
   hideElements(elements, filters)
   {
     for (let element of elements)
       hideElement(element);
 
     if (this.tracer)
     {
-      ext.backgroundPage.sendMessage({
+      chrome.runtime.sendMessage({
         type: "devtools.traceElemHide",
         selectors: [],
         filters
       });
     }
   },
 
   apply()
   {
-    ext.backgroundPage.sendMessage({type: "elemhide.getSelectors"}, response =>
+    chrome.runtime.sendMessage({type: "elemhide.getSelectors"}, response =>
     {
       if (this.tracer)
         this.tracer.disconnect();
       this.tracer = null;
 
       if (this.style && this.style.parentElement)
         this.style.parentElement.removeChild(this.style);
       this.style = null;