diff --git a/dom/svg/test/mochitest.ini b/dom/svg/test/mochitest.ini
index 6f03487395d1..a187bb77edac 100644
--- a/dom/svg/test/mochitest.ini
+++ b/dom/svg/test/mochitest.ini
@@ -86,6 +86,7 @@ skip-if = android_version == '18' # bug 1147994
 [test_SVGxxxListIndexing.xhtml]
 [test_SVGxxxList.xhtml]
 [test_switch.xhtml]
+[test_tabindex.html]
 [test_tearoff_with_cc.html]
 support-files = tearoff_with_cc_helper.html
 [test_text_2.html]
diff --git a/dom/svg/test/test_tabindex.html b/dom/svg/test/test_tabindex.html
new file mode 100644
index 000000000000..37ae830d7eb7
--- /dev/null
+++ b/dom/svg/test/test_tabindex.html
@@ -0,0 +1,68 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+  <title>Test for SVG tabIndex - Bug 778654</title>
+  <link rel="stylesheet" type="text/css"
+        href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
+</head>
+<body>
+<svg xmlns="http://www.w3.org/2000/svg" overflow="visible">
+  <foreignObject id="f" x="0" y="0" width="200" height="60" tabindex="0">
+    <body xmlns="http://www.w3.org/1999/xhtml">
+      <p>Here is a paragraph that requires word wrap</p>
+    </body>
+  </foreignObject>
+  <rect id="r" x="0" y="70" width="100" height="100" fill="yellow" tabIndex="1"/>
+  <text id="t" x="0" y="200" tabindex="2">
+        This is SVG text
+  </text>
+</svg>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+SimpleTest.waitForExplicitFinish();
+
+function main()
+{
+  var f = document.getElementById('f');
+  var r = document.getElementById('r');
+  var t = document.getElementById('t');
+
+  try {
+    // Step 1: Checking by assigning tabIndex
+    is(f.tabIndex, 0, "foreignObject initial tabIndex");
+    f.tabIndex = 1;
+    is(f.tabIndex, 1, "foreignObject tabIndex is set to 1");
+
+    is(r.tabIndex, 1, "rect initial tabIndex");
+    r.tabIndex = 2;
+    is(r.tabIndex, 2, "rect tabIndex is set to 2");
+
+    is(t.tabIndex, 2, "text initial tabIndex");
+    t.tabIndex = 3;
+    is(t.tabIndex, 3, "text is set to 3");
+
+    // Step 2: Checking by triggering TAB event
+    is(document.activeElement.tabIndex, -1, "In the beginning, the active element tabindex is -1");
+
+    synthesizeKey("VK_TAB", {});
+    is(document.activeElement.tabIndex, 1, "The active element tabindex is 1");
+
+    synthesizeKey("VK_TAB", {});
+    is(document.activeElement.tabIndex, 2, "The active element tabindex is 2");
+
+    synthesizeKey("VK_TAB", {});
+    is(document.activeElement.tabIndex, 3, "The active element tabindex is 3");
+  } catch(e) {
+    ok(false, "Got unexpected exception" + e);
+  }
+
+  SimpleTest.finish();
+}
+
+window.addEventListener("load", main, false);
+</script>
+</pre>
+</body>
+</html>
diff --git a/layout/reftests/svg/outline-ref.html b/layout/reftests/svg/outline-ref.html
new file mode 100644
index 000000000000..74571b04909f
--- /dev/null
+++ b/layout/reftests/svg/outline-ref.html
@@ -0,0 +1,88 @@
+<!DOCTYPE HTML>
+<html lang="en">
+<body>
+<svg xmlns="http://www.w3.org/2000/svg" overflow="visible">
+  <g>
+    <rect id="rect" width="100" height="100" style="fill: yellow"/>
+    <text id="text" x="0" y="140" font-family="Verdana" font-size="20">
+      Hello world
+    </text>
+     <foreignObject id="foreignObject" x="0" y="160" width="200" height="60">
+      <div xmlns="http://www.w3.org/1999/xhtml">
+        Here is a paragraph that requires word wrap
+      </div>
+    </foreignObject>
+    <circle id="circle" cx="40" cy="275" r="40" style="fill: green"/>
+    <ellipse id="ellipse" cx="70" cy="380" rx="70" ry="50" style="fill: yellow"/>
+    <image id="image" x="0" y="450" height="100" width="100"/>
+    <line id="line" x1="0" y1="580" x2="100" y2="580" style="stroke: red; stroke-width: 2"/>
+    <path id="path" d="M50 600 L10 650 L90 650 Z"/>
+    <polygon id="polygon" points="300,50 350,0 400,50" style="fill: lime"/>
+    <polyline id="polyline" points="300,80 350,70 400,80" style="fill: none;stroke: black; stroke-width: 3"/>
+    <g transform="translate(300, 70)">
+      <circle id="gCircle" cx="50" cy="50" r="20" style="fill: blue"/>
+    </g>
+    <g transform="translate(300, 150)">
+      <circle id="ggCircle" cx="50" cy="50" r="20" style="fill: green"/>
+      <g>
+        <rect id="ggRect" x="15" y ="15" width="30" height="10" style="fill: blue"/>
+      </g>
+    </g>
+    <svg x="300" y="250">
+      <rect id="innerRect" x="30" y="10" height="50" width="50" style="fill: red"/>
+    </svg>
+  </g>
+</svg>
+<script>
+
+function createOutline(boundingRect) {
+  // Outline starts from a top-left shift pixel of the bounding rect
+  var left = boundingRect.left - 1;
+  var top  = boundingRect.top - 1;
+  var right = boundingRect.right;
+  var bottom = boundingRect.bottom;
+  var width = boundingRect.width;
+  var height = boundingRect.height;
+
+  var lines = document.createElement("div");
+  var styles = 'border: 1px solid;'
+               + 'width: ' + width + 'px;'
+               + 'height: ' + height + 'px;'
+               + 'position: absolute;'
+               + 'top: ' + top + 'px;'
+               + 'left: ' + left + 'px;';
+
+  lines.setAttribute('style', styles);
+  document.body.appendChild(lines);
+}
+
+window.onload = function drawOutline() {
+  var elements = ['rect', 'foreignObject', 'circle',
+                  'ellipse', 'image', 'line', 'path',
+                  'polygon', 'polyline', 'text','gCircle',
+                  'innerRect'];
+  elements.forEach(id => {
+    var element = document.getElementById(id);
+    createOutline(element.getBoundingClientRect());
+  });
+
+  var ggRect = document.getElementById('ggRect');
+  var ggRectbbox = ggRect.getBoundingClientRect();
+  createOutline(ggRectbbox);
+
+  var ggCircle = document.getElementById('ggCircle');
+  var ggCirclebbox = ggCircle.getBoundingClientRect();
+
+  var ggbbox = {
+    left: ggRectbbox.left,
+    top: ggRectbbox.top,
+    right: ggCirclebbox.right,
+    bottom: ggCirclebbox.bottom
+  };
+  ggbbox.width = ggbbox.right - ggbbox.left;
+  ggbbox.height = ggbbox.bottom - ggbbox.top;
+  createOutline(ggbbox);
+}
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/layout/reftests/svg/outline.html b/layout/reftests/svg/outline.html
new file mode 100644
index 000000000000..fcc623128a83
--- /dev/null
+++ b/layout/reftests/svg/outline.html
@@ -0,0 +1,52 @@
+<!DOCTYPE HTML>
+<html lang="en">
+<style>
+rect,
+text,
+foreignObject,
+circle,
+ellipse,
+image,
+line,
+path,
+polygon,
+polyline {
+  outline: 1px solid;
+}
+
+</style>
+<body>
+<svg xmlns="http://www.w3.org/2000/svg" overflow="visible">
+  <g>
+    <rect width="100" height="100" style="fill: yellow"/>
+    <text x="0" y="140" font-family="Verdana" font-size="20">
+      Hello world
+    </text>
+    <foreignObject x="0" y="160" width="200" height="60">
+      <div xmlns="http://www.w3.org/1999/xhtml">
+        Here is a paragraph that requires word wrap
+      </div>
+    </foreignObject>
+    <circle cx="40" cy="275" r="40" style="fill: green"/>
+    <ellipse cx="70" cy="380" rx="70" ry="50" style="fill: yellow"/>
+    <image x="0" y="450" height="100" width="100"/>
+    <line x1="0" y1="580" x2="100" y2="580" style="stroke: red; stroke-width: 2"/>
+    <path d="M50 600 L10 650 L90 650 Z"/>
+    <polygon points="300,50 350,0 400,50" style="fill: lime"/>
+    <polyline points="300,80 350,70 400,80" style="fill: none; stroke: black;stroke-width: 3"/>
+    <g transform="translate(300, 70)" style="outline: 1px solid">
+      <circle cx="50" cy="50" r="20" style="fill: blue; outline: 0px"/>
+    </g>
+    <g transform="translate(300, 150)" style="outline: 1px solid">
+      <circle cx="50" cy="50" r="20" style="fill: green; outline: 0px"/>
+      <g>
+        <rect x="15" y="15" width="30" height="10" style="fill: blue"/>
+      </g>
+    </g>
+    <svg x="300" y="250">
+      <rect x="30" y="10" height="50" width="50" style="fill: red"/>
+    </svg>
+  </g>
+</svg>
+</body>
+</html>
\ No newline at end of file
diff --git a/layout/reftests/svg/reftest.list b/layout/reftests/svg/reftest.list
index 2ae86a2f7575..565e6296f3c4 100644
--- a/layout/reftests/svg/reftest.list
+++ b/layout/reftests/svg/reftest.list
@@ -246,6 +246,7 @@ skip-if(d2d) fuzzy-if(cocoaWidget,1,99974) fuzzy-if(skiaContent,1,200000) == opa
 == opacity-and-pattern-01.svg pass.svg
 fuzzy-if(skiaContent,1,10000) == opacity-and-transform-01.svg opacity-and-transform-01-ref.svg
 fuzzy-if(Android,8,200) random-if((B2G&&browserIsRemote)||Mulet) == outer-svg-border-and-padding-01.svg outer-svg-border-and-padding-01-ref.svg # Initial mulet triage: parity with B2G/B2G Desktop
+== outline.html outline-ref.html
 == overflow-on-outer-svg-01.svg overflow-on-outer-svg-01-ref.svg
 == overflow-on-outer-svg-02a.xhtml overflow-on-outer-svg-02-ref.xhtml
 == overflow-on-outer-svg-02b.xhtml overflow-on-outer-svg-02-ref.xhtml
