aura: Allow creating content_shell without views.

content/content_shell.gypi

Index: content/content_shell.gypi
diff --git a/content/content_shell.gypi b/content/content_shell.gypi
index efd102fbf24c18dd5a9e7b0c44ed81db696c167b..389decde5cb9924c6fbf9f7f8a90dad363ef06e8 100644
--- a/content/content_shell.gypi
+++ b/content/content_shell.gypi
@@ -130,6 +130,7 @@
         'shell/browser/shell_speech_recognition_manager_delegate.h',
         'shell/browser/shell_url_request_context_getter.cc',
         'shell/browser/shell_url_request_context_getter.h',
+        'shell/browser/shell_views.cc',
         'shell/browser/shell_web_contents_view_delegate_android.cc',
         'shell/browser/shell_web_contents_view_delegate_creator.h',
         'shell/browser/shell_web_contents_view_delegate_gtk.cc',
@@ -214,7 +215,7 @@
             '../base/allocator/allocator.gyp:allocator',
           ],
         }],
-        ['use_aura==1', {
+        ['use_aura==1 and toolkit_views==1', {
           'dependencies': [
             '../ui/aura/aura.gyp:aura',
             '../ui/base/strings/ui_strings.gyp:ui_strings',
@@ -224,10 +225,22 @@
             '../ui/ui.gyp:ui_resources',
           ],
           'sources/': [
+            ['exclude', 'shell/browser/shell_aura.cc'],
             ['exclude', 'shell/browser/shell_gtk.cc'],
             ['exclude', 'shell/browser/shell_win.cc'],
           ],
-        }],  # use_aura==1
+        }],  # use_aura==1 and toolkit_views==1
+        ['use_aura==1 and toolkit_views==0', {
+          'dependencies': [
+            '../ui/aura/aura.gyp:aura',
+            '../ui/base/strings/ui_strings.gyp:ui_strings',

[Daniel Erat, 2013/10/17 14:41:19]

nit: is it possible to refactor these a bit further to remove some duplication?
e.g.

  use_aura==1:
    add aura and ui_strings deps
    exclude shell_{gtk,win}.cc
  toolkit_views==1:
    add webview, views, views_test_support, ui_resources deps
    exclude shell_aura.cc
  else (toolkit_views==0):
    exclude shell_views.cc

[sadrul, 2013/10/18 13:05:19]

Done.

+          ],
+          'sources/': [
+            ['exclude', 'shell/browser/shell_gtk.cc'],
+            ['exclude', 'shell/browser/shell_views.cc'],
+            ['exclude', 'shell/browser/shell_win.cc'],
+          ],
+        }],
         ['chromeos==1', {
           'dependencies': [
             '../chromeos/chromeos.gyp:chromeos',