Reorganize apps/shell into app, browser and common directories

apps/apps.gypi

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
       'target_name': 'apps',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 106 matching lines @@
             '../content/content.gyp:content',
             '../content/content_shell_and_tests.gyp:content_shell_lib',
             '../skia/skia.gyp:skia',
             '../ui/views/views.gyp:views',
             '../ui/wm/wm.gyp:wm_test_support',
           ],
           'include_dirs': [
             '..',
           ],
           'sources': [
+            'shell/app/shell_main_delegate.cc',
+            'shell/app/shell_main_delegate.h',
+            'shell/app/shell_main.cc',
+            'shell/browser/shell_app_sorting.cc',
+            'shell/browser/shell_app_sorting.h',
+            'shell/browser/shell_browser_context.cc',
+            'shell/browser/shell_browser_context.h',
+            'shell/browser/shell_browser_main_parts.cc',
+            'shell/browser/shell_browser_main_parts.h',
+            'shell/browser/shell_content_browser_client.cc',
+            'shell/browser/shell_content_browser_client.h',
+            'shell/browser/shell_extension_system.cc',
+            'shell/browser/shell_extension_system.h',
+            'shell/browser/shell_extensions_browser_client.cc',
+            'shell/browser/shell_extensions_browser_client.h',
+            'shell/browser/web_view_window.cc',
+            'shell/browser/web_view_window.cc',
+            'shell/common/shell_content_client.cc',
+            'shell/common/shell_content_client.h',
+            'shell/common/shell_extensions_client.cc',
+            'shell/common/shell_extensions_client.h',
             'shell/renderer/shell_content_renderer_client.cc',
             'shell/renderer/shell_content_renderer_client.h',
-            'shell/shell_app_sorting.cc',
-            'shell/shell_app_sorting.h',
-            'shell/shell_browser_context.cc',
-            'shell/shell_browser_context.h',
-            'shell/shell_browser_main_parts.cc',
-            'shell/shell_browser_main_parts.h',
-            'shell/shell_content_browser_client.cc',
-            'shell/shell_content_browser_client.h',
-            'shell/shell_content_client.cc',
-            'shell/shell_content_client.h',
-            'shell/shell_extension_system.cc',
-            'shell/shell_extension_system.h',
-            'shell/shell_extensions_browser_client.cc',
-            'shell/shell_extensions_browser_client.h',
-            'shell/shell_extensions_client.cc',
-            'shell/shell_extensions_client.h',
-            'shell/shell_main_delegate.cc',
-            'shell/shell_main_delegate.h',
-            'shell/shell_main.cc',
-            'shell/web_view_window.cc',
-            'shell/web_view_window.cc',
           ],
         },
       ],  # targets
     }],  # chromeos==1
   ],  # conditions
 }