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

chrome/browser/chrome_gpu_util.cc

Index: chrome/browser/chrome_gpu_util.cc
diff --git a/chrome/browser/chrome_gpu_util.cc b/chrome/browser/chrome_gpu_util.cc
index 7885aed3bdba02d5639ac52d775d34922e07fba9..74a719c62fa8683c1fddd1d08fd61d2c95869c37 100644
--- a/chrome/browser/chrome_gpu_util.cc
+++ b/chrome/browser/chrome_gpu_util.cc
@@ -176,6 +176,12 @@ void InitializeCompositingFieldTrial() {
     // 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(