ash: Add some test coverage for WM gestures.

ui/aura/test/event_generator.h

 // 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.
 
 #ifndef UI_AURA_TEST_EVENT_GENERATOR_H_
 #define UI_AURA_TEST_EVENT_GENERATOR_H_
 
 #include "base/basictypes.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 #include "ui/gfx/point.h"
@@ skipping 111 matching lines @@
   // Generates press, move, release touch-events to generate a sequence of
   // scroll events. |duration| and |steps| affect the velocity of the scroll,
   // and depending on these values, this may also generate FLING scroll
   // gestures. If velocity/fling is irrelevant for the test, then any non-zero
   // values for these should be sufficient.
   void GestureScrollSequence(const gfx::Point& start,
                              const gfx::Point& end,
                              const base::TimeDelta& duration,
                              int steps);
 
+  // Generates press, move, release touch-events to generate a sequence of
+  // multi-finger scroll events. |count| specifies the number of touch-points
+  // that should generate the scroll events. |start| are the starting positions
+  // of all the touch points. |steps| and |event_separation_time_ms| are
+  // relevant when testing velocity/fling/swipe, otherwise these can be any
+  // non-zero value. |delta_x| and |delta_y| are the amount that each finger
+  // should be moved.
+  void GestureMultiFingerScroll(int count,
+                                const gfx::Point* start,
+                                int event_separation_time_ms,
+                                int steps,
+                                int move_x,
+                                int move_y);
+
   // Generates a key press event. On platforms except Windows and X11, a key
   // event without native_event() is generated. Note that ui::EF_ flags should
   // be passed as |flags|, not the native ones like 'ShiftMask' in <X11/X.h>.
   // TODO(yusukes): Support native_event() on all platforms.
   void PressKey(ui::KeyboardCode key_code, int flags);
 
   // Generates a key release event. On platforms except Windows and X11, a key
   // event without native_event() is generated. Note that ui::EF_ flags should
   // be passed as |flags|, not the native ones like 'ShiftMask' in <X11/X.h>.
   // TODO(yusukes): Support native_event() on all platforms.
@@ skipping 10 matching lines @@
   int flags_;
   gfx::Point current_location_;
 
   DISALLOW_COPY_AND_ASSIGN(EventGenerator);
 };
 
 }  // namespace test
 }  // namespace aura
 
 #endif  // UI_AURA_TEST_EVENT_GENERATOR_H_