Linux/CrOS smooth scrolling support - behind a flag.

chrome/browser/about_flags.cc

 // Copyright (c) 2011 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/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 298 matching lines @@
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kRestrictInstantToSearch)
   },
   {
     "indexeddb-use-leveldb",  // FLAGS:RECORD_UMA
     IDS_FLAGS_INDEXEDDB_USE_LEVELDB_NAME,
     IDS_FLAGS_INDEXEDDB_USE_LEVELDB_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kLevelDBIndexedDatabase)
   },
+#if defined(ENABLE_SMOOTH_SCROLLING)
+  {
+    "enable-smooth-scrolling",  // FLAGS:RECORD_UMA
+    IDS_FLAGS_ENABLE_SMOOTH_SCROLLING_NAME,
+    IDS_FLAGS_ENABLE_SMOOTH_SCROLLING_DESCRIPTION,
+    kOsAll,

[vangelis, 2011/06/02 20:33:56]

If your WebKit patch is only available on some platforms, kOsAll should be
replaced by specific platform names.

[Scott Byer, 2011/06/02 21:07:26]

See patch set #1. I think by the time we are ready for it to come out from
behind the compile time switch, it should be ready across platforms; we can
always revisit at that point. I don't have a strong opinion on this, though.

[vangelis, 2011/06/02 21:13:12]

Ah, ok. That makes sense.  I missed the fact that it's inside an
ENABLE_SMOOTH_SCROLLING fence.

+    SINGLE_VALUE_TYPE(switches::kEnableSmoothScrolling)
+  },
+#endif
 };
 
 const Experiment* experiments = kExperiments;
 size_t num_experiments = arraysize(kExperiments);
 
 // Stores and encapsulates the little state that about:flags has.
 class FlagsState {
  public:
   FlagsState() : needs_restart_(false) {}
   void ConvertFlagsToSwitches(PrefService* prefs, CommandLine* command_line);
@@ skipping 420 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags