Explicit interface for synchronous InputHandlerProxy input handling

content/renderer/gpu/input_handler_proxy_unittest.cc

 // Copyright (c) 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 "content/renderer/gpu/input_handler_proxy.h"
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/renderer/gpu/input_handler_proxy_client.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
 #include "third_party/WebKit/public/platform/WebFloatSize.h"
 #include "third_party/WebKit/public/platform/WebGestureCurve.h"
 #include "third_party/WebKit/public/platform/WebPoint.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 
 using WebKit::WebActiveWheelFlingParameters;
 using WebKit::WebFloatPoint;
 using WebKit::WebFloatSize;
 using WebKit::WebGestureEvent;
 using WebKit::WebInputEvent;
 using WebKit::WebMouseWheelEvent;
 using WebKit::WebPoint;
 using WebKit::WebSize;
 
+namespace content {
 namespace {
 
 class MockInputHandler : public cc::InputHandler {
  public:
   MockInputHandler() {}
   virtual ~MockInputHandler() {}
 
   MOCK_METHOD0(PinchGestureBegin, void());
   MOCK_METHOD2(PinchGestureUpdate,
                void(float magnify_delta, gfx::Point anchor));
@@ skipping 69 matching lines @@
 };
 
 class MockInputHandlerProxyClient
     : public content::InputHandlerProxyClient {
  public:
   MockInputHandlerProxyClient() {}
   virtual ~MockInputHandlerProxyClient() {}
 
   virtual void WillShutdown() OVERRIDE {}
 
-  MOCK_METHOD0(DidHandleInputEvent, void());
-  MOCK_METHOD1(DidNotHandleInputEvent, void(bool send_to_widget));
-
   MOCK_METHOD1(TransferActiveWheelFlingAnimation,
                void(const WebActiveWheelFlingParameters&));
 
   virtual WebKit::WebGestureCurve* CreateFlingAnimationCurve(
       int deviceSource,
       const WebFloatPoint& velocity,
       const WebSize& cumulative_scroll) OVERRIDE {
     return new FakeWebGestureCurve(velocity, cumulative_scroll);
   }
 
   virtual void DidOverscroll(gfx::Vector2dF overscroll,
                              gfx::Vector2dF fling_velocity) {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockInputHandlerProxyClient);
 };
 
 class InputHandlerProxyTest : public testing::Test {
  public:
-  InputHandlerProxyTest() : expected_disposition_(DidHandle) {
+  InputHandlerProxyTest()
+      : expected_disposition_(InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE) {
     input_handler_.reset(
         new content::InputHandlerProxy(&mock_input_handler_));
     input_handler_->SetClient(&mock_client_);
   }
 
   ~InputHandlerProxyTest() {
     input_handler_.reset();
   }
 
 // This is defined as a macro because when an expectation is not satisfied the
 // only output you get
 // out of gmock is the line number that set the expectation.
 #define VERIFY_AND_RESET_MOCKS()                                              \
   do {                                                                        \
     testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);          \
     testing::Mock::VerifyAndClearExpectations(&mock_client_);                 \
-    switch (expected_disposition_) {                                          \
-      case DidHandle:                                                         \
-        /* If we expect to handle events, we shouldn't get any */             \
-        /* DidNotHandleInputEvent() calls with any parameter. */              \
-        EXPECT_CALL(mock_client_, DidNotHandleInputEvent(::testing::_))       \
-            .Times(0);                                                        \
-        EXPECT_CALL(mock_client_, DidHandleInputEvent());                     \
-        break;                                                                \
-      case DidNotHandle:                                                      \
-        /* If we aren't expecting to handle events, we shouldn't call      */ \
-        /* DidHandleInputEvent(). */                                          \
-        EXPECT_CALL(mock_client_, DidHandleInputEvent()).Times(0);            \
-        EXPECT_CALL(mock_client_, DidNotHandleInputEvent(false)).Times(0);    \
-        EXPECT_CALL(mock_client_, DidNotHandleInputEvent(true));              \
-        break;                                                                \
-      case DropEvent:                                                         \
-        /* If we're expecting to drop, we shouldn't get any didHandle..() */  \
-        /* or DidNotHandleInputEvent(true) calls. */                          \
-        EXPECT_CALL(mock_client_, DidHandleInputEvent()).Times(0);            \
-        EXPECT_CALL(mock_client_, DidNotHandleInputEvent(true)).Times(0);     \
-        EXPECT_CALL(mock_client_, DidNotHandleInputEvent(false));             \
-        break;                                                                \
-    }                                                                         \
   } while (false)
 
  protected:
   testing::StrictMock<MockInputHandler> mock_input_handler_;
   scoped_ptr<content::InputHandlerProxy> input_handler_;
   testing::StrictMock<MockInputHandlerProxyClient> mock_client_;
   WebGestureEvent gesture_;
 
-  enum ExpectedDisposition {
-    DidHandle,
-    DidNotHandle,
-    DropEvent
-  };
-  ExpectedDisposition expected_disposition_;
+  InputHandlerProxy::EventDisposition expected_disposition_;
 };
 
 TEST_F(InputHandlerProxyTest, MouseWheelByPageMainThread) {
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_NOT_HANDLE;
   WebMouseWheelEvent wheel;
   wheel.type = WebInputEvent::MouseWheel;
   wheel.scrollByPage = true;
 
-  EXPECT_CALL(mock_client_, DidNotHandleInputEvent(true)).Times(1);
-  input_handler_->HandleInputEvent(wheel);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(wheel));
   testing::Mock::VerifyAndClearExpectations(&mock_client_);
 }
 
 TEST_F(InputHandlerProxyTest, GestureScrollStarted) {
   // We shouldn't send any events to the widget for this gesture.
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
 
   gesture_.type = WebInputEvent::GestureScrollBegin;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_,input_handler_->HandleInputEvent(gesture_));
 
   // The event should not be marked as handled if scrolling is not possible.
-  expected_disposition_ = DropEvent;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DROP_EVENT;
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GestureScrollUpdate;
   gesture_.data.scrollUpdate.deltaY =
       -40;  // -Y means scroll down - i.e. in the +Y direction.
   EXPECT_CALL(mock_input_handler_,
               ScrollBy(testing::_,
                        testing::Property(&gfx::Vector2dF::y, testing::Gt(0))))
       .WillOnce(testing::Return(false));
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   // Mark the event as handled if scroll happens.
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GestureScrollUpdate;
   gesture_.data.scrollUpdate.deltaY =
       -40;  // -Y means scroll down - i.e. in the +Y direction.
   EXPECT_CALL(mock_input_handler_,
               ScrollBy(testing::_,
                        testing::Property(&gfx::Vector2dF::y, testing::Gt(0))))
       .WillOnce(testing::Return(true));
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GestureScrollEnd;
   gesture_.data.scrollUpdate.deltaY = 0;
   EXPECT_CALL(mock_input_handler_, ScrollEnd());
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GestureScrollOnMainThread) {
   // We should send all events to the widget for this gesture.
-  expected_disposition_ = DidNotHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_NOT_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(::testing::_, ::testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollOnMainThread));
 
   gesture_.type = WebInputEvent::GestureScrollBegin;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GestureScrollUpdate;
   gesture_.data.scrollUpdate.deltaY = 40;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GestureScrollEnd;
   gesture_.data.scrollUpdate.deltaY = 0;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GestureScrollIgnored) {
   // We shouldn't handle the GestureScrollBegin.
-  // Instead, we should get one DidNotHandleInputEvent(false) call per
-  // HandleInputEvent(), indicating that we could determine that there's nothing
-  // that could scroll or otherwise react to this gesture sequence and thus we
-  // should drop the whole gesture sequence on the floor.
-  expected_disposition_ = DropEvent;
+  // Instead, we should get a EVENT_DISPOSITION_DROP_EVENT result, indicating
+  // that we could determine that there's nothing that could scroll or otherwise
+  // react to this gesture sequence and thus we should drop the whole gesture
+  // sequence on the floor.
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DROP_EVENT;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollIgnored));
 
   gesture_.type = WebInputEvent::GestureScrollBegin;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GesturePinch) {
   // We shouldn't send any events to the widget for this gesture.
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GesturePinchBegin;
   EXPECT_CALL(mock_input_handler_, PinchGestureBegin());
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GesturePinchUpdate;
   gesture_.data.pinchUpdate.scale = 1.5;
   gesture_.x = 7;
   gesture_.y = 13;
   EXPECT_CALL(mock_input_handler_, PinchGestureUpdate(1.5, gfx::Point(7, 13)));
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GesturePinchUpdate;
   gesture_.data.pinchUpdate.scale = 0.5;
   gesture_.x = 9;
   gesture_.y = 6;
   EXPECT_CALL(mock_input_handler_, PinchGestureUpdate(.5, gfx::Point(9, 6)));
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GesturePinchEnd;
   EXPECT_CALL(mock_input_handler_, PinchGestureEnd());
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GesturePinchAfterScrollOnMainThread) {
   // Scrolls will start by being sent to the main thread.
-  expected_disposition_ = DidNotHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_NOT_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(::testing::_, ::testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollOnMainThread));
 
   gesture_.type = WebInputEvent::GestureScrollBegin;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GestureScrollUpdate;
   gesture_.data.scrollUpdate.deltaY = 40;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   // However, after the pinch gesture starts, they should go to the impl
   // thread.
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GesturePinchBegin;
   EXPECT_CALL(mock_input_handler_, PinchGestureBegin());
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GesturePinchUpdate;
   gesture_.data.pinchUpdate.scale = 1.5;
   gesture_.x = 7;
   gesture_.y = 13;
   EXPECT_CALL(mock_input_handler_, PinchGestureUpdate(1.5, gfx::Point(7, 13)));
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GestureScrollUpdate;
   gesture_.data.scrollUpdate.deltaY =
       -40;  // -Y means scroll down - i.e. in the +Y direction.
   EXPECT_CALL(mock_input_handler_,
               ScrollBy(testing::_,
                        testing::Property(&gfx::Vector2dF::y, testing::Gt(0))))
       .WillOnce(testing::Return(true));
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GesturePinchUpdate;
   gesture_.data.pinchUpdate.scale = 0.5;
   gesture_.x = 9;
   gesture_.y = 6;
   EXPECT_CALL(mock_input_handler_, PinchGestureUpdate(.5, gfx::Point(9, 6)));
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GesturePinchEnd;
   EXPECT_CALL(mock_input_handler_, PinchGestureEnd());
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   // After the pinch gesture ends, they should go to back to the main
   // thread.
-  expected_disposition_ = DidNotHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_NOT_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GestureScrollEnd;
   gesture_.data.scrollUpdate.deltaY = 0;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GestureFlingStartedTouchpad) {
   // We shouldn't send any events to the widget for this gesture.
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
   EXPECT_CALL(mock_input_handler_, ScrollEnd());
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
 
   gesture_.type = WebInputEvent::GestureFlingStart;
   gesture_.data.flingStart.velocityX = 10;
   gesture_.sourceDevice = WebGestureEvent::Touchpad;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   // Verify that a GestureFlingCancel during an animation cancels it.
   gesture_.type = WebInputEvent::GestureFlingCancel;
   gesture_.sourceDevice = WebGestureEvent::Touchpad;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GestureFlingOnMainThreadTouchpad) {
   // We should send all events to the widget for this gesture.
-  expected_disposition_ = DidNotHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_NOT_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollOnMainThread));
 
   gesture_.type = WebInputEvent::GestureFlingStart;
   gesture_.sourceDevice = WebGestureEvent::Touchpad;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   // Since we returned ScrollStatusOnMainThread from scrollBegin, ensure the
   // input handler knows it's scrolling off the impl thread
   ASSERT_FALSE(input_handler_->gesture_scroll_on_impl_thread_for_testing());
 
   VERIFY_AND_RESET_MOCKS();
 
   // Even if we didn't start a fling ourselves, we still need to send the cancel
   // event to the widget.
   gesture_.type = WebInputEvent::GestureFlingCancel;
   gesture_.sourceDevice = WebGestureEvent::Touchpad;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GestureFlingIgnoredTouchpad) {
-  expected_disposition_ = DidNotHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_NOT_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollIgnored));
 
   gesture_.type = WebInputEvent::GestureFlingStart;
   gesture_.sourceDevice = WebGestureEvent::Touchpad;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
-  expected_disposition_ = DropEvent;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DROP_EVENT;
   VERIFY_AND_RESET_MOCKS();
 
   // Since the previous fling was ignored, we should also be dropping the next
   // fling_cancel.
   gesture_.type = WebInputEvent::GestureFlingCancel;
   gesture_.sourceDevice = WebGestureEvent::Touchpad;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GestureFlingAnimatesTouchpad) {
   // We shouldn't send any events to the widget for this gesture.
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   // On the fling start, we should schedule an animation but not actually start
   // scrolling.
   gesture_.type = WebInputEvent::GestureFlingStart;
   WebFloatPoint fling_delta = WebFloatPoint(1000, 0);
   WebPoint fling_point = WebPoint(7, 13);
   WebPoint fling_global_point = WebPoint(17, 23);
   int modifiers = 7;
   gesture_.data.flingStart.velocityX = fling_delta.x;
   gesture_.data.flingStart.velocityY = fling_delta.y;
   gesture_.sourceDevice = WebGestureEvent::Touchpad;
   gesture_.x = fling_point.x;
   gesture_.y = fling_point.y;
   gesture_.globalX = fling_global_point.x;
   gesture_.globalY = fling_global_point.y;
   gesture_.modifiers = modifiers;
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
   EXPECT_CALL(mock_input_handler_, ScrollEnd());
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);
   // The first animate call should let us pick up an animation start time, but
   // we shouldn't actually move anywhere just yet. The first frame after the
   // fling start will typically include the last scroll from the gesture that
   // lead to the scroll (either wheel or gesture scroll), so there should be no
   // visible hitch.
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .Times(0);
@@ skipping 59 matching lines @@
   // frame being requested.
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation()).Times(0);
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .Times(0);
   time += base::TimeDelta::FromMilliseconds(100);
   input_handler_->Animate(time);
 
   // Since we've transferred the fling to the main thread, we need to pass the
   // next GestureFlingCancel to the main
   // thread as well.
-  EXPECT_CALL(mock_client_, DidNotHandleInputEvent(true));
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_NOT_HANDLE;
   gesture_.type = WebInputEvent::GestureFlingCancel;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GestureFlingTransferResetsTouchpad) {
   // We shouldn't send any events to the widget for this gesture.
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   // Start a gesture fling in the -X direction with zero Y movement.
   gesture_.type = WebInputEvent::GestureFlingStart;
   WebFloatPoint fling_delta = WebFloatPoint(1000, 0);
   WebPoint fling_point = WebPoint(7, 13);
   WebPoint fling_global_point = WebPoint(17, 23);
   int modifiers = 1;
   gesture_.data.flingStart.velocityX = fling_delta.x;
   gesture_.data.flingStart.velocityY = fling_delta.y;
   gesture_.sourceDevice = WebGestureEvent::Touchpad;
   gesture_.x = fling_point.x;
   gesture_.y = fling_point.y;
   gesture_.globalX = fling_global_point.x;
   gesture_.globalY = fling_global_point.y;
   gesture_.modifiers = modifiers;
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
   EXPECT_CALL(mock_input_handler_, ScrollEnd());
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);
 
   // Start the fling animation at time 10. This shouldn't actually scroll, just
   // establish a start time.
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .Times(0);
   base::TimeTicks time = base::TimeTicks() + base::TimeDelta::FromSeconds(10);
   input_handler_->Animate(time);
@@ skipping 60 matching lines @@
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .Times(0);
   time += base::TimeDelta::FromMilliseconds(100);
   input_handler_->Animate(time);
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);
 
   // Since we've transferred the fling to the main thread, we need to pass the
   // next GestureFlingCancel to the main
   // thread as well.
-  EXPECT_CALL(mock_client_, DidNotHandleInputEvent(true));
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_NOT_HANDLE;
   gesture_.type = WebInputEvent::GestureFlingCancel;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
   input_handler_->MainThreadHasStoppedFlinging();
 
   // Start a second gesture fling, this time in the +Y direction with no X.
   gesture_.type = WebInputEvent::GestureFlingStart;
   fling_delta = WebFloatPoint(0, -1000);
   fling_point = WebPoint(95, 87);
   fling_global_point = WebPoint(32, 71);
   modifiers = 2;
   gesture_.data.flingStart.velocityX = fling_delta.x;
   gesture_.data.flingStart.velocityY = fling_delta.y;
   gesture_.sourceDevice = WebGestureEvent::Touchpad;
   gesture_.x = fling_point.x;
   gesture_.y = fling_point.y;
   gesture_.globalX = fling_global_point.x;
   gesture_.globalY = fling_global_point.y;
   gesture_.modifiers = modifiers;
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
   EXPECT_CALL(mock_input_handler_, ScrollEnd());
-  input_handler_->HandleInputEvent(gesture_);
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);
 
   // Start the second fling animation at time 30.
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .Times(0);
   time = base::TimeTicks() + base::TimeDelta::FromSeconds(30);
   input_handler_->Animate(time);
 
@@ skipping 36 matching lines @@
           testing::Field(&WebActiveWheelFlingParameters::startTime,
                          testing::Eq(30)),
           testing::Field(&WebActiveWheelFlingParameters::cumulativeScroll,
                          testing::Field(&WebSize::height, testing::Lt(0))))));
   time += base::TimeDelta::FromMilliseconds(100);
   input_handler_->Animate(time);
 }
 
 TEST_F(InputHandlerProxyTest, GestureFlingStartedTouchscreen) {
   // We shouldn't send any events to the widget for this gesture.
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
   gesture_.type = WebInputEvent::GestureScrollBegin;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, FlingScrollBegin())
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
 
   gesture_.type = WebInputEvent::GestureFlingStart;
   gesture_.data.flingStart.velocityX = 10;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollEnd());
 
   // Verify that a GestureFlingCancel during an animation cancels it.
   gesture_.type = WebInputEvent::GestureFlingCancel;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GestureFlingOnMainThreadTouchscreen) {
   // We should send all events to the widget for this gesture.
-  expected_disposition_ = DidNotHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_NOT_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollOnMainThread));
 
   gesture_.type = WebInputEvent::GestureScrollBegin;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, FlingScrollBegin()).Times(0);
 
   gesture_.type = WebInputEvent::GestureFlingStart;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   // Even if we didn't start a fling ourselves, we still need to send the cancel
   // event to the widget.
   gesture_.type = WebInputEvent::GestureFlingCancel;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GestureFlingIgnoredTouchscreen) {
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
 
   gesture_.type = WebInputEvent::GestureScrollBegin;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
-  expected_disposition_ = DropEvent;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DROP_EVENT;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, FlingScrollBegin())
       .WillOnce(testing::Return(cc::InputHandler::ScrollIgnored));
 
   gesture_.type = WebInputEvent::GestureFlingStart;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   // Even if we didn't start a fling ourselves, we still need to send the cancel
   // event to the widget.
   gesture_.type = WebInputEvent::GestureFlingCancel;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest, GestureFlingAnimatesTouchscreen) {
   // We shouldn't send any events to the widget for this gesture.
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
 
   gesture_.type = WebInputEvent::GestureScrollBegin;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   VERIFY_AND_RESET_MOCKS();
 
   // On the fling start, we should schedule an animation but not actually start
   // scrolling.
   gesture_.type = WebInputEvent::GestureFlingStart;
   WebFloatPoint fling_delta = WebFloatPoint(1000, 0);
   WebPoint fling_point = WebPoint(7, 13);
   WebPoint fling_global_point = WebPoint(17, 23);
   int modifiers = 7;
   gesture_.data.flingStart.velocityX = fling_delta.x;
   gesture_.data.flingStart.velocityY = fling_delta.y;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
   gesture_.x = fling_point.x;
   gesture_.y = fling_point.y;
   gesture_.globalX = fling_global_point.x;
   gesture_.globalY = fling_global_point.y;
   gesture_.modifiers = modifiers;
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   EXPECT_CALL(mock_input_handler_, FlingScrollBegin())
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);
   // The first animate call should let us pick up an animation start time, but
   // we shouldn't actually move anywhere just yet. The first frame after the
   // fling start will typically include the last scroll from the gesture that
   // lead to the scroll (either wheel or gesture scroll), so there should be no
   // visible hitch.
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   base::TimeTicks time = base::TimeTicks() + base::TimeDelta::FromSeconds(10);
   input_handler_->Animate(time);
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);
 
   // The second call should start scrolling in the -X direction.
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   EXPECT_CALL(mock_input_handler_,
               ScrollBy(testing::_,
                        testing::Property(&gfx::Vector2dF::x, testing::Lt(0))))
       .WillOnce(testing::Return(true));
   time += base::TimeDelta::FromMilliseconds(100);
   input_handler_->Animate(time);
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);
 
-  EXPECT_CALL(mock_client_, DidHandleInputEvent());
   EXPECT_CALL(mock_input_handler_, ScrollEnd());
   gesture_.type = WebInputEvent::GestureFlingCancel;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
 TEST_F(InputHandlerProxyTest,
        GestureScrollOnImplThreadFlagClearedAfterFling) {
   // We shouldn't send any events to the widget for this gesture.
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   EXPECT_CALL(mock_input_handler_, ScrollBegin(testing::_, testing::_))
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
 
   gesture_.type = WebInputEvent::GestureScrollBegin;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   // After sending a GestureScrollBegin, the member variable
   // |gesture_scroll_on_impl_thread_| should be true.
   EXPECT_TRUE(input_handler_->gesture_scroll_on_impl_thread_for_testing());
 
-  expected_disposition_ = DidHandle;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DID_HANDLE;
   VERIFY_AND_RESET_MOCKS();
 
   // On the fling start, we should schedule an animation but not actually start
   // scrolling.
   gesture_.type = WebInputEvent::GestureFlingStart;
   WebFloatPoint fling_delta = WebFloatPoint(1000, 0);
   WebPoint fling_point = WebPoint(7, 13);
   WebPoint fling_global_point = WebPoint(17, 23);
   int modifiers = 7;
   gesture_.data.flingStart.velocityX = fling_delta.x;
   gesture_.data.flingStart.velocityY = fling_delta.y;
   gesture_.sourceDevice = WebGestureEvent::Touchscreen;
   gesture_.x = fling_point.x;
   gesture_.y = fling_point.y;
   gesture_.globalX = fling_global_point.x;
   gesture_.globalY = fling_global_point.y;
   gesture_.modifiers = modifiers;
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   EXPECT_CALL(mock_input_handler_, FlingScrollBegin())
       .WillOnce(testing::Return(cc::InputHandler::ScrollStarted));
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   // |gesture_scroll_on_impl_thread_| should still be true after
   // a GestureFlingStart is sent.
   EXPECT_TRUE(input_handler_->gesture_scroll_on_impl_thread_for_testing());
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);
   // The first animate call should let us pick up an animation start time, but
   // we shouldn't actually move anywhere just yet. The first frame after the
   // fling start will typically include the last scroll from the gesture that
   // lead to the scroll (either wheel or gesture scroll), so there should be no
   // visible hitch.
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   base::TimeTicks time = base::TimeTicks() + base::TimeDelta::FromSeconds(10);
   input_handler_->Animate(time);
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);
 
   // The second call should start scrolling in the -X direction.
   EXPECT_CALL(mock_input_handler_, ScheduleAnimation());
   EXPECT_CALL(mock_input_handler_,
               ScrollBy(testing::_,
                        testing::Property(&gfx::Vector2dF::x, testing::Lt(0))))
       .WillOnce(testing::Return(true));
   time += base::TimeDelta::FromMilliseconds(100);
   input_handler_->Animate(time);
 
   testing::Mock::VerifyAndClearExpectations(&mock_input_handler_);
 
-  EXPECT_CALL(mock_client_, DidHandleInputEvent());
   EXPECT_CALL(mock_input_handler_, ScrollEnd());
   gesture_.type = WebInputEvent::GestureFlingCancel;
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 
   // |gesture_scroll_on_impl_thread_| should be false once
   // the fling has finished (note no GestureScrollEnd has been sent).
   EXPECT_TRUE(!input_handler_->gesture_scroll_on_impl_thread_for_testing());
 }
 
 TEST_F(InputHandlerProxyTest, LastInputEventForVSync) {
-  expected_disposition_ = DropEvent;
+  expected_disposition_ = InputHandlerProxy::EVENT_DISPOSITION_DROP_EVENT;
   VERIFY_AND_RESET_MOCKS();
 
   gesture_.type = WebInputEvent::GestureFlingCancel;
   gesture_.timeStampSeconds = 1234;
   base::TimeTicks time =
       base::TimeTicks() +
       base::TimeDelta::FromSeconds(gesture_.timeStampSeconds);
   gesture_.modifiers |= WebInputEvent::IsLastInputEventForCurrentVSync;
   EXPECT_CALL(mock_input_handler_, DidReceiveLastInputEventForBeginFrame(time));
-  input_handler_->HandleInputEvent(gesture_);
+  EXPECT_EQ(expected_disposition_, input_handler_->HandleInputEvent(gesture_));
 }
 
-}  // namespace
+} // namespace
+} // namespace content