Enable force-compositing-mode on developer and continuous builds. This should start running the

chrome/browser/chrome_gpu_util.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/chrome_gpu_util.h"
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/version.h"
@@ skipping 158 matching lines @@
   chrome::VersionInfo::Channel channel = chrome::VersionInfo::GetChannel();
   if (channel == chrome::VersionInfo::CHANNEL_CANARY ||
       channel == chrome::VersionInfo::CHANNEL_DEV) {
 #if defined(OS_WIN)
     // Enable threaded compositing on Windows.
     threaded_compositing_probability = kDivisor;
 #elif defined(OS_MACOSX)
     // Enable force-compositing-mode on the Mac.
     force_compositing_mode_probability = kDivisor;
 #endif
+  } else if (channel == chrome::VersionInfo::CHANNEL_UNKNOWN) {
+    // Continuous and local builds on windows and mac
+    // enable force-compositing-mode
+#if defined(OS_WIN) || defined(OS_MACOSX)
+    force_compositing_mode_probability = kDivisor;
+#endif
   }
 
   int force_compositing_group = trial->AppendGroup(
       content::kGpuCompositingFieldTrialForceCompositingEnabledName,
       force_compositing_mode_probability);
   int thread_group = trial->AppendGroup(
       content::kGpuCompositingFieldTrialThreadEnabledName,
       threaded_compositing_probability);
 
   bool force_compositing = (trial->group() == force_compositing_group);
   bool thread = (trial->group() == thread_group);
   UMA_HISTOGRAM_BOOLEAN("GPU.InForceCompositingModeFieldTrial",
                         force_compositing);
   UMA_HISTOGRAM_BOOLEAN("GPU.InCompositorThreadFieldTrial", thread);
 }
 
 }  // namespace gpu_util;