Refactor ShellDesktopController and ShellNativeAppWindow to allow for non-aura implementations.

extensions/shell/app_shell.gyp

Index: extensions/shell/app_shell.gyp
diff --git a/extensions/shell/app_shell.gyp b/extensions/shell/app_shell.gyp
index 2682d5e99d123c8f651af5b5ae788854cfe70755..879f6c1350f55c314928ce09bfe0ceb98df0065c 100644
--- a/extensions/shell/app_shell.gyp
+++ b/extensions/shell/app_shell.gyp
@@ -39,9 +39,16 @@
         '<(DEPTH)/mojo/mojo_base.gyp:mojo_environment_chromium',
         '<(DEPTH)/skia/skia.gyp:skia',
         '<(DEPTH)/third_party/WebKit/public/blink.gyp:blink',
-        '<(DEPTH)/ui/wm/wm.gyp:wm',
         '<(DEPTH)/v8/tools/gyp/v8.gyp:v8',
       ],
+      'conditions': [
+        ['use_aura==1', {
+            'dependencies': [
+              '<(DEPTH)/ui/wm/wm.gyp:wm',
+            ],
+          }
+        ],
+      ],
       'include_dirs': [
         '../..',
         '<(SHARED_INTERMEDIATE_DIR)',
@@ -77,8 +84,6 @@
         'browser/shell_browser_main_parts.h',
         'browser/shell_content_browser_client.cc',
         'browser/shell_content_browser_client.h',
-        'browser/shell_desktop_controller.cc',
-        'browser/shell_desktop_controller.h',
         'browser/shell_device_client.cc',
         'browser/shell_device_client.h',
         'browser/shell_display_info_provider.cc',
@@ -124,6 +129,14 @@
         'utility/shell_content_utility_client.h',
       ],
       'conditions': [
+        ['use_aura==1', {
+          'sources': [
+            'browser/shell_desktop_controller_aura.cc',
+            'browser/shell_desktop_controller_aura.h',
+            'browser/shell_native_app_window_aura.cc',
+            'browser/shell_native_app_window_aura.h',
+          ],
+        }],
         ['chromeos==1', {
           'dependencies': [
             '<(DEPTH)/chromeos/chromeos.gyp:chromeos',
@@ -252,7 +265,6 @@
         'browser/api/shell_gcd/shell_gcd_api_unittest.cc',
         'browser/api/shell_window/shell_window_api_unittest.cc',
         'browser/shell_audio_controller_chromeos_unittest.cc',
-        'browser/shell_desktop_controller_unittest.cc',
         'browser/shell_nacl_browser_delegate_unittest.cc',
         'browser/shell_oauth2_token_service_unittest.cc',
         'common/shell_content_client_unittest.cc'
@@ -263,6 +275,11 @@
             'browser/shell_nacl_browser_delegate_unittest.cc',
           ],
         }],
+        ['use_aura==1', {
+          'sources': [
+            'browser/shell_desktop_controller_aura_unittest.cc',
+          ],
+        }],
         ['chromeos==1', {
           'dependencies': [
             '<(DEPTH)/chromeos/chromeos.gyp:chromeos_test_support_without_gmock',