fixing epsilion value

cc/trees/layer_tree_host_impl_unittest.cc

Index: cc/trees/layer_tree_host_impl_unittest.cc
diff --git a/cc/trees/layer_tree_host_impl_unittest.cc b/cc/trees/layer_tree_host_impl_unittest.cc
index 01cb870d36f5489c9b102dd2afe9b0d9f0f98b7a..f8dbcec723cf82872bb0695255df1dc387aec09f 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -3218,6 +3218,14 @@ TEST_F(LayerTreeHostImplTest, NoOverscrollWhenNotAtEdge) {
     EXPECT_EQ(gfx::Vector2dF(0.000000f, 17.699997f).ToString(),
               host_impl_->accumulated_root_overscroll().ToString());
     host_impl_->ScrollEnd();
+    // TestCase to check  kEpsilon, which prevents minute values to trigger
+    // gloweffect without reaching edge.
+    EXPECT_EQ(InputHandler::ScrollStarted,
+              host_impl_->ScrollBegin(gfx::Point(0, 0), InputHandler::Wheel));
+    host_impl_->ScrollBy(gfx::Point(), gfx::Vector2dF(-0.12f, 0.1f));
+    EXPECT_EQ(gfx::Vector2dF().ToString(),
+              host_impl_->accumulated_root_overscroll().ToString());
+    host_impl_->ScrollEnd();
   }
 }