ui/events: Add changed_button_flags_ in ui::PointerEvent.

ui/events/event_unittest.cc

 // Copyright (c) 2012 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/event.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 891 matching lines @@
       ui::INPUT_EVENT_LATENCY_UI_COMPONENT, 0, nullptr));
 }
 
 TEST(EventTest, PointerEventToMouseEvent) {
   const struct {
     ui::EventType in_type;
     ui::EventType out_type;
     gfx::Point location;
     gfx::Point root_location;
     int flags;
+    int changed_button_flags;
   } kTestData[] = {
       {ui::ET_POINTER_DOWN, ui::ET_MOUSE_PRESSED, gfx::Point(10, 20),
-       gfx::Point(110, 120), 0},
+       gfx::Point(110, 120), 0, 0},
       {ui::ET_POINTER_MOVED, ui::ET_MOUSE_MOVED, gfx::Point(20, 10),
-       gfx::Point(1, 2), 0},
+       gfx::Point(1, 2), 0, 0},
       {ui::ET_POINTER_MOVED, ui::ET_MOUSE_DRAGGED, gfx::Point(20, 10),
-       gfx::Point(1, 2), EF_LEFT_MOUSE_BUTTON},
+       gfx::Point(1, 2), EF_LEFT_MOUSE_BUTTON, 0},
       {ui::ET_POINTER_MOVED, ui::ET_MOUSE_DRAGGED, gfx::Point(20, 10),
-       gfx::Point(1, 2), EF_RIGHT_MOUSE_BUTTON},
+       gfx::Point(1, 2), EF_RIGHT_MOUSE_BUTTON, 0},
       {ui::ET_POINTER_MOVED, ui::ET_MOUSE_DRAGGED, gfx::Point(20, 10),
-       gfx::Point(1, 2), EF_MIDDLE_MOUSE_BUTTON},
+       gfx::Point(1, 2), EF_MIDDLE_MOUSE_BUTTON, 0},
       {ui::ET_POINTER_ENTERED, ui::ET_MOUSE_ENTERED, gfx::Point(), gfx::Point(),
-       EF_MIDDLE_MOUSE_BUTTON | EF_RIGHT_MOUSE_BUTTON},
+       EF_MIDDLE_MOUSE_BUTTON | EF_RIGHT_MOUSE_BUTTON, 0},
       {ui::ET_POINTER_EXITED, ui::ET_MOUSE_EXITED, gfx::Point(5, 1),
-       gfx::Point(1, 5), EF_RIGHT_MOUSE_BUTTON},
+       gfx::Point(1, 5), EF_RIGHT_MOUSE_BUTTON, 0},
       {ui::ET_POINTER_UP, ui::ET_MOUSE_RELEASED, gfx::Point(1000, 1000),
-       gfx::Point(14, 15), EF_MIDDLE_MOUSE_BUTTON}};
+       gfx::Point(14, 15), EF_MIDDLE_MOUSE_BUTTON, EF_MIDDLE_MOUSE_BUTTON}};
 
   for (size_t i = 0; i < arraysize(kTestData); i++) {
     ui::PointerEvent pointer_event(
         kTestData[i].in_type, kTestData[i].location, kTestData[i].root_location,
-        kTestData[i].flags, 0,
+        kTestData[i].flags, 0, kTestData[i].changed_button_flags,
         ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_MOUSE),
         base::TimeTicks());
     ui::MouseEvent mouse_event(pointer_event);
 
     EXPECT_EQ(kTestData[i].out_type, mouse_event.type());
     EXPECT_EQ(kTestData[i].location, mouse_event.location());
     EXPECT_EQ(kTestData[i].root_location, mouse_event.root_location());
     EXPECT_EQ(kTestData[i].flags, mouse_event.flags());
+    EXPECT_EQ(kTestData[i].changed_button_flags,
+              mouse_event.changed_button_flags());
   }
 }
 
 TEST(EventTest, PointerEventToTouchEventType) {
   ui::EventType kTouchTypeMap[][2] = {
       {ui::ET_POINTER_DOWN, ui::ET_TOUCH_PRESSED},
       {ui::ET_POINTER_MOVED, ui::ET_TOUCH_MOVED},
       {ui::ET_POINTER_UP, ui::ET_TOUCH_RELEASED},
       {ui::ET_POINTER_CANCELLED, ui::ET_TOUCH_CANCELLED},
   };
 
   for (size_t i = 0; i < arraysize(kTouchTypeMap); i++) {
     ui::PointerEvent pointer_event(
-        kTouchTypeMap[i][0], gfx::Point(), gfx::Point(), 0, 0,
+        kTouchTypeMap[i][0], gfx::Point(), gfx::Point(), 0, 0, 0,
         ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_TOUCH),
         base::TimeTicks());
     ui::TouchEvent touch_event(pointer_event);
 
     EXPECT_EQ(kTouchTypeMap[i][1], touch_event.type());
   }
 }
 
 TEST(EventTest, PointerEventToTouchEventDetails) {
   ui::PointerEvent pointer_event(
@@ skipping 54 matching lines @@
   XButtonEvent* button_event = &(native_event.xbutton);
   button_event->type = ButtonPress;
   button_event->button = 4; // A valid wheel button number between min and max.
   MouseWheelEvent mouse_ev(&native_event);
 
   histogram_tester.ExpectTotalCount("Event.Latency.OS.MOUSE_WHEEL", 1);
 #endif
 }
 
 }  // namespace ui