[Merge] Make mouse buttons 8 - 11 navigate forward and back in history

ui/events/ozone/evdev/event_converter_evdev_impl_unittest.cc

 // Copyright 2014 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 "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/events/event.h"
@@ skipping 380 matching lines @@
 
   event = dispatched_mouse_event(0);
   EXPECT_EQ(ui::ET_MOUSE_PRESSED, event->type());
   EXPECT_EQ(true, event->IsLeftMouseButton());
 
   event = dispatched_mouse_event(1);
   EXPECT_EQ(ui::ET_MOUSE_RELEASED, event->type());
   EXPECT_EQ(true, event->IsLeftMouseButton());
 }
 
+// Test that BTN_BACK and BTN_SIDE are treated as the same button.
+TEST_F(EventConverterEvdevImplTest, MouseBackButton) {
+  ui::MockEventConverterEvdevImpl* dev = device();
+
+  struct input_event mock_kernel_queue[] = {
+      {{0, 0}, EV_KEY, BTN_SIDE, 1},
+      {{0, 0}, EV_SYN, SYN_REPORT, 0},
+
+      {{0, 0}, EV_KEY, BTN_BACK, 1},
+      {{0, 0}, EV_SYN, SYN_REPORT, 0},
+
+      {{0, 0}, EV_KEY, BTN_SIDE, 0},
+      {{0, 0}, EV_SYN, SYN_REPORT, 0},
+
+      {{0, 0}, EV_KEY, BTN_BACK, 0},
+      {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+
+  dev->ProcessEvents(mock_kernel_queue, arraysize(mock_kernel_queue));
+  EXPECT_EQ(2u, size());
+
+  ui::MouseEvent* event = nullptr;
+
+  event = dispatched_mouse_event(0);
+  EXPECT_EQ(ui::ET_MOUSE_PRESSED, event->type());
+  EXPECT_EQ(ui::EF_BACK_MOUSE_BUTTON, event->changed_button_flags());
+
+  event = dispatched_mouse_event(1);
+  EXPECT_EQ(ui::ET_MOUSE_RELEASED, event->type());
+  EXPECT_EQ(ui::EF_BACK_MOUSE_BUTTON, event->changed_button_flags());
+}
+
+// Test that BTN_FORWARD and BTN_EXTRA are treated as the same button.
+TEST_F(EventConverterEvdevImplTest, MouseForwardButton) {
+  ui::MockEventConverterEvdevImpl* dev = device();
+
+  struct input_event mock_kernel_queue[] = {
+      {{0, 0}, EV_KEY, BTN_FORWARD, 1},
+      {{0, 0}, EV_SYN, SYN_REPORT, 0},
+
+      {{0, 0}, EV_KEY, BTN_EXTRA, 1},
+      {{0, 0}, EV_SYN, SYN_REPORT, 0},
+
+      {{0, 0}, EV_KEY, BTN_EXTRA, 0},
+      {{0, 0}, EV_SYN, SYN_REPORT, 0},
+
+      {{0, 0}, EV_KEY, BTN_FORWARD, 0},
+      {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+
+  dev->ProcessEvents(mock_kernel_queue, arraysize(mock_kernel_queue));
+  EXPECT_EQ(2u, size());
+
+  ui::MouseEvent* event = nullptr;
+
+  event = dispatched_mouse_event(0);
+  EXPECT_EQ(ui::ET_MOUSE_PRESSED, event->type());
+  EXPECT_EQ(ui::EF_FORWARD_MOUSE_BUTTON, event->changed_button_flags());
+
+  event = dispatched_mouse_event(1);
+  EXPECT_EQ(ui::ET_MOUSE_RELEASED, event->type());
+  EXPECT_EQ(ui::EF_FORWARD_MOUSE_BUTTON, event->changed_button_flags());
+}
+
 TEST_F(EventConverterEvdevImplTest, MouseMove) {
   ui::MockEventConverterEvdevImpl* dev = device();
 
   struct input_event mock_kernel_queue[] = {
       {{0, 0}, EV_REL, REL_X, 4},
       {{0, 0}, EV_REL, REL_Y, 2},
       {{0, 0}, EV_SYN, SYN_REPORT, 0},
   };
 
   dev->ProcessEvents(mock_kernel_queue, arraysize(mock_kernel_queue));
@@ skipping 157 matching lines @@
   dev->SetAllowedKeys(allowed_keys.Pass());
   ASSERT_EQ(1u, size());
   event = dispatched_event(0);
   EXPECT_EQ(ui::ET_KEY_RELEASED, event->type());
 
   // The real key release should be dropped, whenever it comes.
   ClearDispatchedEvents();
   dev->ProcessEvents(key_release, arraysize(key_release));
   ASSERT_EQ(0u, size());
 }