Fixed getLocationInView to handle shadowDom.

Author: sevaseva

javascript/chrome-driver/atoms.js

@@ -128,6 +128,9 @@ webdriver.chrome.scrollIntoView_ = function(elem, region, center) {
                                            container.clientHeight);
     scrollHelper(container, containerSize, offset, region, center);
     container = container.parentNode;
+    if (SHADOW_DOM_ENABLED && (container instanceof ShadowRoot)) {
+      container = container.host;
+    }
   }
 
   offset = goog.style.getClientPosition(elem);

javascript/chrome-driver/test/shadow_dom_test.html

@@ -14,7 +14,12 @@ <H1>Page for Shadow DOM chromedriver tests</H1>
 The page has a shadow root that in turn contains two shadow roots. So we can
 check behaviour with both nested roots and younger/older sibling roots. The
 various sections are highlighted with colored borders to make it more obvious
-where each element comes from.
+where each element comes from. Default to pushing the content off the first 
+screen, to test that scrolling to the elements works.
+<div id="padding"></div>
+<script>
+document.getElementById('padding').style.height = window.innerHeight;
+</script>
 <div id="outerDiv">
   <div id="innerDiv" style="border-style:solid;border-color:yellow">
     stuff
@@ -84,12 +89,14 @@ <H4>Younger Child Shadow</H4>
     return new goog.math.Coordinate(x, y);
   }
 
-
   function testShadowRootIsElementClickable() {
     // check isElementClickable works as expected on elements within a shadow
     // DOM
     var elemButton = document.querySelector("* /deep/ #olderButton");
     var elemText = document.querySelector("* /deep/ #olderTextBox");
+
+    // scroll to the element
+    webdriver.chrome.getLocationInView(elemButton, true);
     assertTrue(
         "Button #olderButton should be clickable",
         webdriver.chrome.isElementClickable(elemButton,