import changes from `dev' branch of rmottola/Arctic-Fox:

- Bug 1120957 - fix the source of searches made with paste & search, r=gijs,bwinton (da403a065)
- Goanna -> Gecko (e8a5d073c)
- Bug 1126057 - Provide better error when ./mach robocop is run without MOZ_HOST_BIN. r=nalexander (730edb656)
- Bug 1147307 - Use the target_out value for b2g mach mochitest. r=ahal (98dd31571)
- goanna -> gecko (4061244fd)
- Bug 1136700 - enable tweaking of the maximum number of timeouts for mochitests; r=jmaher (da0c9df86)
- goanna -> gecko (c7e86c998)
- Bug 1146234 - Allow non-object values to be used as the this value when invoking IDL callback functions. r=peterv (b00049033)
- Bug 1146333. Get rid of WrapCallThisValue and just use ToJSValue, now that we have it. r=peterv (095eb6d9d)
- whitespace fix (caf4808f0)
- Bug 1159401 - Split Blob and File classes, r=bz (700dbfd9b)

dom/html/HTMLInputElement.cpp

@@ -561,7 +561,8 @@ public:
     nsCOMPtr<nsIGlobalObject> global = mInput->OwnerDoc()->GetScopeObject();
     for (uint32_t i = 0; i < mFileList.Length(); ++i) {
       MOZ_ASSERT(!mFileList[i]->GetParentObject());
-      mFileList[i] = new File(global, mFileList[i]->Impl());
+      mFileList[i] = File::Create(global, mFileList[i]->Impl());
+      MOZ_ASSERT(mFileList[i]);
     }
 
     // The text control frame (if there is one) isn't going to send a change
@@ -2359,7 +2360,10 @@ HTMLInputElement::MozSetFileArray(const Sequence<OwningNonNull<File>>& aFiles)
   }
   nsTArray<nsRefPtr<File>> files;
   for (uint32_t i = 0; i < aFiles.Length(); ++i) {
-    files.AppendElement(new File(global, aFiles[i].get()->Impl()));
+    nsRefPtr<File> file = File::Create(global, aFiles[i].get()->Impl());
+    MOZ_ASSERT(file);
+
+    files.AppendElement(file);
   }
   SetFiles(files, true);
 }
@@ -6020,7 +6024,9 @@ HTMLInputElement::RestoreState(nsPresState* aState)
 
           nsTArray<nsRefPtr<File>> files;
           for (uint32_t i = 0, len = fileImpls.Length(); i < len; ++i) {
-            nsRefPtr<File> file = new File(global, fileImpls[i]);
+            nsRefPtr<File> file = File::Create(global, fileImpls[i]);
+            MOZ_ASSERT(file);
+
             files.AppendElement(file);
           }