[Android] Cancel long press on ACTION_CANCEL as well

Public documentation says CANCEL should be treated similarly to UP
except it should not be peforming any of the actual actions.

BUG=
Android only change. Ran through android trybots.
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/12223101

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182254 0039d316-1c4b-4281-b951-d872f2087c98

content/public/android/java/src/org/chromium/content/browser/LongPressDetector.java

@@ -109,6 +109,7 @@ class LongPressDetector {
                 }
                 break;
             case MotionEvent.ACTION_UP:
+            case MotionEvent.ACTION_CANCEL:
                 if (mCurrentDownEvent.getDownTime() + TAP_TIMEOUT + LONGPRESS_TIMEOUT >
                     ev.getEventTime()) {
                     mInLongPress = false;

content/public/android/javatests/src/org/chromium/content/browser/LongPressDetectorTest.java

@@ -51,14 +51,7 @@ public class LongPressDetectorTest extends InstrumentationTestCase {
         assertTrue("Should have a pending LONG_PRESS", mLongPressDetector.hasPendingMessage());
     }
 
-    /**
-     * Verify a DOWN with a corresponding UP will not have a pending Gesture.
-     *
-     * @throws Exception
-     */
-    @SmallTest
-    @Feature({"AndroidWebView"})
-    public void testGestureNoLongPress() throws Exception {
+    private void gestureNoLongPressTestHelper(int cancelActionType) throws Exception {
         final long downTime = SystemClock.uptimeMillis();
         final long eventTime = SystemClock.uptimeMillis();
 
@@ -67,11 +60,33 @@ public class LongPressDetectorTest extends InstrumentationTestCase {
 
         assertTrue("Should have a pending LONG_PRESS", mLongPressDetector.hasPendingMessage());
 
-        event = motionEvent(MotionEvent.ACTION_UP, downTime, eventTime + 10);
+        event = motionEvent(cancelActionType, downTime, eventTime + 10);
         mLongPressDetector.cancelLongPressIfNeeded(event);
         assertTrue("Should not have a pending LONG_PRESS", !mLongPressDetector.hasPendingMessage());
     }
 
+    /**
+     * Verify a DOWN with a corresponding UP will not have a pending Gesture.
+     *
+     * @throws Exception
+     */
+    @SmallTest
+    @Feature({"AndroidWebView"})
+    public void testGestureNoLongPressOnUp() throws Exception {
+        gestureNoLongPressTestHelper(MotionEvent.ACTION_UP);
+    }
+
+    /**
+     * Verify a DOWN with a corresponding CANCEL will not have a pending Gesture.
+     *
+     * @throws Exception
+     */
+    @SmallTest
+    @Feature({"AndroidWebView"})
+    public void testGestureNoLongPressOnCancel() throws Exception {
+        gestureNoLongPressTestHelper(MotionEvent.ACTION_CANCEL);
+    }
+
     /**
      * Verify that a DOWN followed by an UP after the long press timer would
      * detect a long press (that is, the UP will not trigger a tap or cancel the