Fix Renderer4.MainThreadWheelScrollReason not being reported.

ui/events/blink/input_handler_proxy_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/events/blink/input_handler_proxy.h"
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/test/histogram_tester.h"
@@ skipping 248 matching lines @@
 
 const cc::InputHandler::ScrollStatus kScrollIgnoredScrollState(
     cc::InputHandler::SCROLL_IGNORED,
     cc::MainThreadScrollingReason::kNotScrollable);
 
 class TestInputHandlerProxy : public InputHandlerProxy {
  public:
   TestInputHandlerProxy(cc::InputHandler* input_handler,
                         InputHandlerProxyClient* client)
       : InputHandlerProxy(input_handler, client) {}
-  void RecordMainThreadScrollingReasonsForTest(blink::WebInputEvent::Type type,
+  void RecordMainThreadScrollingReasonsForTest(blink::WebGestureDevice device,
                                                uint32_t reasons) {
-    RecordMainThreadScrollingReasons(type, reasons);
+    RecordMainThreadScrollingReasons(device, reasons);
   }
 };
 
 }  // namespace
 
 class InputHandlerProxyTest
     : public testing::Test,
       public testing::WithParamInterface<InputHandlerProxyTestType> {
  public:
   InputHandlerProxyTest()
@@ skipping 2558 matching lines @@
                                       gfx::ScrollOffset(5, 6)));
   proxy.SynchronouslySetRootScrollOffset(gfx::ScrollOffset(5, 6));
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler);
   testing::Mock::VerifyAndClearExpectations(&mock_client);
   testing::Mock::VerifyAndClearExpectations(&mock_synchronous_input_handler);
 }
 
 TEST_P(InputHandlerProxyTest, MainThreadScrollingMouseWheelHistograms) {
   input_handler_->RecordMainThreadScrollingReasonsForTest(
-      WebInputEvent::MouseWheel,
+      blink::WebGestureDeviceTouchpad,
       cc::MainThreadScrollingReason::kHasBackgroundAttachmentFixedObjects |
           cc::MainThreadScrollingReason::kThreadedScrollingDisabled |
           cc::MainThreadScrollingReason::kPageOverlay |
           cc::MainThreadScrollingReason::kAnimatingScrollOnMainThread);
 
   EXPECT_THAT(
       histogram_tester().GetAllSamples("Renderer4.MainThreadWheelScrollReason"),
       testing::ElementsAre(base::Bucket(1, 1), base::Bucket(3, 1),
                            base::Bucket(5, 1), base::Bucket(14, 1)));
 }
 
 
 INSTANTIATE_TEST_CASE_P(AnimateInput,
                         InputHandlerProxyTest,
                         testing::ValuesIn(test_types));
 }  // namespace test
 }  // namespace ui