Import sources form local repo

chrome.manifest

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+content  vstab       ./
+overlay  chrome://browser/content/browser.xul    chrome://vstab/content/vstab.xul

install.rdf

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+<?xml version='1.0' encoding='utf-8'?>
+<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:em="http://www.mozilla.org/2004/em-rdf#">
+	<Description about="urn:mozilla:install-manifest">
+		<em:id>vstab@Off.JustOff</em:id>
+		<em:name>View Source In Tab</em:name>
+		<em:version>1.0.2</em:version>
+		<em:description>View Source in Tab</em:description>
+		<em:creator>JustOff</em:creator>
+		<em:contributor>Brian King</em:contributor>
+		<em:contributor>WYSIWYG Classic Icons by dryicons (http://dryicons.com/)</em:contributor>
+		<em:updateURL>https://localhost/update.xml</em:updateURL>
+
+		<em:targetApplication>
+			<Description>
+				<em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
+				<em:minVersion>24.0</em:minVersion>
+				<em:maxVersion>*</em:maxVersion>
+			</Description>
+		</em:targetApplication>
+		<em:targetApplication>
+			<Description>
+				<em:id>{8de7fcbb-c55c-4fbe-bfc5-fc555c87dbc4}</em:id>
+				<em:minVersion>24.0</em:minVersion>
+				<em:maxVersion>*</em:maxVersion>
+			</Description>
+		</em:targetApplication>
+	</Description>
+</RDF>

vstab.js

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+var vstabClass =
+{
+	InterceptVS: function ()
+	{
+		var page = content.location.href;
+		var ioService = Components.classes["@mozilla.org/network/io-service;1"]
+		                .getService(Components.interfaces.nsIIOService);
+		var uri = ioService.newURI(page, null, null);
+		var proto = uri.scheme;
+
+		if (proto != "view-source") {
+			openUILinkIn("view-source:"+uri.spec, "tab");
+		}
+	},
+
+	BrowserViewSourceOfDocument: function (aDocument)
+	{
+		openUILinkIn("view-source:"+aDocument.location.href, "tab");
+	}
+};

vstab.xul

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+<?xml version="1.0"?>
+
+<!DOCTYPE overlay [
+<!ENTITY % browserDTD SYSTEM "chrome://browser/locale/browser.dtd" >
+%browserDTD;
+]>
+
+<overlay id="vstabOverlay"
+	xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+	xmlns:nc="http://home.netscape.com/NC-rdf#"
+	xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+	<script type="application/x-javascript" src="chrome://vstab/content/vstab.js"/>
+
+	<stringbundleset id="stringbundleset">
+		<stringbundle id="viewSourceBundle" src="chrome://global/locale/viewSource.properties"/>
+	</stringbundleset>
+
+	<commandset id="mainCommandSet">
+		<command id="View:PageSource" oncommand="vstabClass.InterceptVS();" observes="isImage"/>
+	</commandset>
+
+	<popup id="contentAreaContextMenu">
+		<menuitem id="context-viewsource"
+			insertbefore="context-viewinfo"
+			label="&viewPageSourceCmd.label;"
+			accesskey=""
+			oncommand="vstabClass.BrowserViewSourceOfDocument(content.document);"/>
+	</popup>
+</overlay>