AIDEGen: Source root conflict in IntelliJ.

Bug: 160303006
Test: This CL should be tested in internal code base.
      1. repo sync(a internal code base) and patch this CL.
      2. m aidegen
      3. a) aidegen -s -a frameworks/base packages/apps/Settings packages/apps/SettingsIntelligence packages/apps/Launcher3 test/suite_harness cts/tests/tests/widget
         b) Select 1. Java
         c) After IntelliJ launchs, select File > Project Structure,
	    switch to "modules" and change any settings in this tab
	    , such as change the radio buttons' settings, and click "OK".
         There is a "Cannot Save Settings" pop-up error message dialog.
      4. a) aidegen-dev -s -a frameworks/base packages/apps/Settings packages/apps/SettingsIntelligence packages/apps/Launcher3 test/suite_harness cts/tests/tests/widget
         b) repeat step 3, b) and c) steps
         There is no pop-up error message dialog.
Change-Id: I460bae84b03beaacfff3f5efac8ebd40005a774d
2 files changed