Pass motion events in the unix sample app.

Allows dragging and flinging the samples.


git-svn-id: http://skia.googlecode.com/svn/trunk@964 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/unix_test_app/main.cpp b/unix_test_app/main.cpp
index d217236..dace89e 100644
--- a/unix_test_app/main.cpp
+++ b/unix_test_app/main.cpp
@@ -96,9 +96,9 @@
                     window->handleClick(evt.xbutton.x, evt.xbutton.y, SkView::Click::kUp_State);
                 break;
             case MotionNotify:
-                // 'If' statement is unnecessary, since we are only masking for button 1
-                if (evt.xbutton.button == Button1)
-                    window->handleClick(evt.xmotion.x, evt.xmotion.y, SkView::Click::kMoved_State);
+                // Since we are only masking to get the motion events for when Button1 is pressed,
+                // we can assume the pointer is moving with Button1 pressed.
+                window->handleClick(evt.xmotion.x, evt.xmotion.y, SkView::Click::kMoved_State);
                 break;
             case KeyPress:
             {