remove parameterized test inheritence for GestureRecognizerTest

Changes:
GestureRecognizerTest has no parameterized tests instantiated. We should
remove ::testing::WithParamInterface<bool> inheritence.

Bug: none
TEST: covered by tests
Change-Id: Ibc5701f59d474be1feb336e4ecafcaebf99bf05c
Reviewed-on: https://chromium-review.googlesource.com/564094Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Commit-Queue: Qiang(Joe) Xu <warx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#485313}

ui/aura/gestures/gesture_recognizer_unittest.cc

@@ -660,8 +660,7 @@ void SetTouchRadius(ui::TouchEvent* event, float radius_x, float radius_y) {
 
 }  // namespace
 
-class GestureRecognizerTest : public AuraTestBase,
-                              public ::testing::WithParamInterface<bool> {
+class GestureRecognizerTest : public AuraTestBase {
  public:
   GestureRecognizerTest() {}