Log whether an event happened during landscape mode or not

b/38211234

<sample log>
  action:TAP
  Source child:APP_ICON, packageHash=-1046965711, componentHash=-371608779, intentHash=208792422, grid(4,4), span(1,1), pageIdx=0	parent:WORKSPACE id=0
  Elapsed container 3071 ms session 3071 ms action 0 ms
  isInLandscapeMode true
  isInMultiWindowMode false
</sample log>

Change-Id: I44dfe4e7ee2a41c56a50cc2b507bbbeedc458018

src/com/android/launcher3/BaseActivity.java

@@ -39,7 +39,7 @@ public abstract class BaseActivity extends Activity {
     public final UserEventDispatcher getUserEventDispatcher() {
         if (mUserEventDispatcher == null) {
             mUserEventDispatcher = UserEventDispatcher.newInstance(this,
-                    isInMultiWindowModeCompat());
+                    mDeviceProfile.isLandscape, isInMultiWindowModeCompat());
         }
         return mUserEventDispatcher;
     }