Adds shift and capslock tests to IME Keyboard tests.

chrome/test/data/chromeos/virtual_keyboard/inputview/test_base.js

Index: chrome/test/data/chromeos/virtual_keyboard/inputview/test_base.js
diff --git a/chrome/test/data/chromeos/virtual_keyboard/inputview/test_base.js b/chrome/test/data/chromeos/virtual_keyboard/inputview/test_base.js
index b7e13ddbff94adb88aee7e68b285df374994b70e..861b2cfbee626ef53d570b29ccc0d55c9fa575cd 100644
--- a/chrome/test/data/chromeos/virtual_keyboard/inputview/test_base.js
+++ b/chrome/test/data/chromeos/virtual_keyboard/inputview/test_base.js
@@ -10,6 +10,7 @@ var setComposition;
 
 var DEFAULT_CONTEXT_ID = 0;
 var LONGPRESS_DELAY = 1100;
+var CAPSLOCK_ID = "OsLeft";
 
 /**
  * Key alignments.
@@ -191,3 +192,26 @@ function mockLongpress(char, altKeys, selection) {
   container = getActiveAltContainer();
   assertFalse(!!container, "Alt key container was not hidden.");
 }
+
+/**
+ * Retrieves the shift key from the current keyset.
+ * @param {Alignment} align The alignment of the shift key.
+ * @return {Object} The key.
+ */
+function getShiftKey(align) {
+  var id;
+  switch(align) {
+    case Alignment.LEFT:
+      id = 'ShiftLeft';
+      break;
+    case Alignment.RIGHT:
+      id = 'ShiftRight';
+      break;
+    default:
+      break;
+  }
+  assertTrue(!!id, "Invalid shift alignment option: " + align);
+  var shift = document.querySelector('#' + id);
+  assertTrue(!!shift, "Cannot find shift key with alignment: " + align);
+  return shift;
+}