Adding Select Action Bar Unit test case for input.

Currently not enought unit test case  is available for Select Action Bar.
This change adding useful UT for Select Action Bar with respect to input
field.

BUG=

Review URL: https://codereview.chromium.org/501383002

Cr-Commit-Position: refs/heads/master@{#291975}

content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java

@@ -172,6 +172,16 @@ public class ImeTest extends ContentShellTestBase {
         assertWaitForKeyboardStatus(true);
     }
 
+    @SmallTest
+    @Feature({"TextInput"})
+    public void testSelectActionBarShownOnLongPressingInput() throws Exception {
+        DOMUtils.longPressNode(this, mContentViewCore, "input_text");
+        assertWaitForSelectActionBarStatus(false);
+        commitText(mConnection, "Sample Text", 1);
+        DOMUtils.longPressNode(this, mContentViewCore, "input_text");
+        assertWaitForSelectActionBarStatus(true);
+    }
+
     @SmallTest
     @Feature({"TextInput"})
     public void testImeCut() throws Exception {
@@ -562,6 +572,16 @@ public class ImeTest extends ContentShellTestBase {
         }));
     }
 
+    private void assertWaitForSelectActionBarStatus(
+            final boolean show) throws InterruptedException {
+        assertTrue(CriteriaHelper.pollForCriteria(new Criteria() {
+            @Override
+            public boolean isSatisfied() {
+                return show == mContentViewCore.isSelectActionBarShowing();
+            }
+        }));
+    }
+
     private void waitAndVerifyEditableCallback(final ArrayList<TestImeState> states,
             final int index, String text, int selectionStart, int selectionEnd,
             int compositionStart, int compositionEnd) throws InterruptedException {