Add ENABLE_PRINTING and disable it on Android.

chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/about_flags.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 217 matching lines @@
   if (url.host() == chrome::kChromeUISettingsFrameHost)
     return &NewWebUI<options2::OptionsUI>;
   // chrome://flags is currently unsupported on Android.
   if (url.host() == chrome::kChromeUIFlagsHost)
     return &NewWebUI<FlagsUI>;
   // chrome://inspect isn't supported on Android. Page debugging is handled by a
   // remote devtools on the host machine, and other elements (Shared Workers,
   // extensions, etc) aren't supported.
   if (url.host() == chrome::kChromeUIInspectHost)
     return &NewWebUI<InspectUI>;
-  // Android doesn't support print/print-preview.
+#endif  // !defined(OS_ANDROID)
+#if defined(ENABLE_PRINTING)

[Lei Zhang, 2012/06/08 23:24:52]

I would write this as:

#if !defined(OS_ANDROID)
AAA
CCC
#endif
#if defined(ENABLE_PRINTING)
BBB
#endif

instead of:


#if !defined(OS_ANDROID)
AAA
#endif
#if defined(ENABLE_PRINTING)
BBB
#endif
#if !defined(OS_ANDROID)
CCC
#endif

[Xianzhu, 2012/06/09 00:51:30]

Done.

   if (url.host() == chrome::kChromeUIPrintHost &&
       !g_browser_process->local_state()->GetBoolean(
           prefs::kPrintPreviewDisabled)) {
     return &NewWebUI<PrintPreviewUI>;
   }
+#endif
+#if !defined(OS_ANDROID)
   // Android does not support plugins for now.
   if (url.host() == chrome::kChromeUIPluginsHost)
     return &NewWebUI<PluginsUI>;
 #endif
 #if defined(OS_WIN)
   if (url.host() == chrome::kChromeUIConflictsHost)
     return &NewWebUI<ConflictsUI>;
 #endif
 #if (defined(USE_NSS) || defined(USE_OPENSSL)) && defined(USE_AURA)
   if (url.host() == chrome::kChromeUICertificateViewerHost)
@@ skipping 247 matching lines @@
   if (page_url.host() == chrome::kChromeUISettingsFrameHost)
     return options2::OptionsUI::GetFaviconResourceBytes();
 
   // Android doesn't use the plugins pages.
   if (page_url.host() == chrome::kChromeUIPluginsHost)
     return PluginsUI::GetFaviconResourceBytes();
 #endif
 
   return NULL;
 }