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

content/browser/browsing_data/browsing_data_remover_impl_unittest.cc

 // Copyright 2017 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 <stddef.h>
 #include <stdint.h>
 
 #include <list>
 #include <memory>
 #include <set>
@@ skipping 133 matching lines @@
     return nullptr;
   }
   storage::DatabaseTracker* GetDatabaseTracker() override { return nullptr; }
   DOMStorageContext* GetDOMStorageContext() override { return nullptr; }
   IndexedDBContext* GetIndexedDBContext() override { return nullptr; }
   ServiceWorkerContext* GetServiceWorkerContext() override { return nullptr; }
   CacheStorageContext* GetCacheStorageContext() override { return nullptr; }
   PlatformNotificationContext* GetPlatformNotificationContext() override {
     return nullptr;
   }
+#if !defined(OS_ANDROID)
   HostZoomMap* GetHostZoomMap() override { return nullptr; }
   HostZoomLevelContext* GetHostZoomLevelContext() override { return nullptr; }
   ZoomLevelDelegate* GetZoomLevelDelegate() override { return nullptr; }
+#endif  // !defined(OS_ANDROID)
 
   void ClearDataForOrigin(uint32_t remove_mask,
                           uint32_t quota_storage_remove_mask,
                           const GURL& storage_origin,
                           net::URLRequestContextGetter* rq_context,
                           const base::Closure& callback) override {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         base::BindOnce(&TestStoragePartition::AsyncRunCallback,
                        base::Unretained(this), callback));
@@ skipping 1481 matching lines @@
 
   // Add one more deletion and wait for it.
   BlockUntilBrowsingDataRemoved(
       base::Time(), base::Time::Max(), BrowsingDataRemover::DATA_TYPE_COOKIES,
       BrowsingDataRemover::ORIGIN_TYPE_UNPROTECTED_WEB);
 
   EXPECT_FALSE(remover->is_removing());
 }
 
 }  // namespace content