Properly dismiss the InputDialogs in all cases

On newer versions of Android, dismissing a date/time dialog (with hw
back or touch outside of it) will still set the date or time. This is
not the case on older Android versions.

This fix adds an OnDismissListener that makes sure the dialog is always
cancelled unless it already have been cancelled or already have reported
back a new date.

R=bulach@chromium.org,olilan@chromium.org,keishi@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/23533041

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@222027 0039d316-1c4b-4281-b951-d872f2087c98

content/public/android/java/src/org/chromium/content/browser/input/InputDialogContainer.java

@@ -168,13 +168,7 @@ public class InputDialogContainer {
 
         mDialog.setButton(DialogInterface.BUTTON_NEGATIVE,
                 mContext.getText(android.R.string.cancel),
-                new DialogInterface.OnClickListener() {
-                    @Override
-                    public void onClick(DialogInterface dialog, int which) {
-                        mDialogAlreadyDismissed = true;
-                        mInputActionDelegate.cancelDateTimeDialog();
-                    }
-                });
+                (DialogInterface.OnClickListener) null);
 
         mDialog.setButton(DialogInterface.BUTTON_NEUTRAL,
                 mContext.getText(R.string.date_picker_dialog_clear),
@@ -186,6 +180,16 @@ public class InputDialogContainer {
                     }
                 });
 
+        mDialog.setOnDismissListener(
+                new OnDismissListener() {
+                    public void onDismiss(final DialogInterface dialog) {
+                        if (!mDialogAlreadyDismissed) {
+                            mDialogAlreadyDismissed = true;
+                            mInputActionDelegate.cancelDateTimeDialog();
+                        }
+                    }
+                });
+
         mDialogAlreadyDismissed = false;
         mDialog.show();
     }