Don't compile code for desktop zoom or GuestViews on mobile platforms.

content/shell/browser/shell_browser_context.cc

 // 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.
 
 #include "content/shell/browser/shell_browser_context.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 105 matching lines @@
   path_ = path_.Append(FILE_PATH_LITERAL("content_shell"));
 #else
   NOTIMPLEMENTED();
 #endif
 
   if (!base::PathExists(path_))
     base::CreateDirectory(path_);
   BrowserContext::Initialize(this, path_);
 }
 
+#if !defined(OS_ANDROID)
 std::unique_ptr<ZoomLevelDelegate> ShellBrowserContext::CreateZoomLevelDelegate(
     const base::FilePath&) {
   return std::unique_ptr<ZoomLevelDelegate>();
 }
+#endif  // !defined(OS_ANDROID)
 
 base::FilePath ShellBrowserContext::GetPath() const {
   return path_;
 }
 
 bool ShellBrowserContext::IsOffTheRecord() const {
   return off_the_record_;
 }
 
 DownloadManagerDelegate* ShellBrowserContext::GetDownloadManagerDelegate()  {
@@ skipping 75 matching lines @@
   return permission_manager_.get();
 }
 
 BackgroundSyncController* ShellBrowserContext::GetBackgroundSyncController() {
   if (!background_sync_controller_)
     background_sync_controller_.reset(new MockBackgroundSyncController());
   return background_sync_controller_.get();
 }
 
 }  // namespace content