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

chromecast/browser/cast_browser_context.h

 // Copyright 2014 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.
 
 #ifndef CHROMECAST_BROWSER_CAST_BROWSER_CONTEXT_H_
 #define CHROMECAST_BROWSER_CAST_BROWSER_CONTEXT_H_
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/content_browser_client.h"
 
 namespace chromecast {
 namespace shell {
 
 class CastDownloadManagerDelegate;
 class URLRequestContextFactory;
 
 // Chromecast does not currently support multiple profiles.  So there is a
 // single BrowserContext for all chromecast renderers.
 // There is no support for PartitionStorage.
 class CastBrowserContext : public content::BrowserContext {
  public:
   explicit CastBrowserContext(
       URLRequestContextFactory* url_request_context_factory);
   ~CastBrowserContext() override;
 
   // BrowserContext implementation:
+#if !defined(OS_ANDROID)
   std::unique_ptr<content::ZoomLevelDelegate> CreateZoomLevelDelegate(
       const base::FilePath& partition_path) override;
+#endif  // !defined(OS_ANDROID)
   base::FilePath GetPath() const override;
   bool IsOffTheRecord() const override;
   content::ResourceContext* GetResourceContext() override;
   content::DownloadManagerDelegate* GetDownloadManagerDelegate() override;
   content::BrowserPluginGuestManager* GetGuestManager() override;
   storage::SpecialStoragePolicy* GetSpecialStoragePolicy() override;
   content::PushMessagingService* GetPushMessagingService() override;
   content::SSLHostStateDelegate* GetSSLHostStateDelegate() override;
   content::PermissionManager* GetPermissionManager() override;
   content::BackgroundSyncController* GetBackgroundSyncController() override;
@@ skipping 25 matching lines @@
   std::unique_ptr<CastDownloadManagerDelegate> download_manager_delegate_;
   std::unique_ptr<content::PermissionManager> permission_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(CastBrowserContext);
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_BROWSER_CAST_BROWSER_CONTEXT_H_