content/blimp: Remove unused compositing mode switches.

blimp/client/core/context/blimp_client_context_impl.cc

Index: blimp/client/core/context/blimp_client_context_impl.cc
diff --git a/blimp/client/core/context/blimp_client_context_impl.cc b/blimp/client/core/context/blimp_client_context_impl.cc
index 24fc086dff91ffb38300288d1a0805dc7c74917d..057e2a83301d5f503ddb79af19eaae18b1c9ef7c 100644
--- a/blimp/client/core/context/blimp_client_context_impl.cc
+++ b/blimp/client/core/context/blimp_client_context_impl.cc
@@ -50,11 +50,6 @@ void DropConnectionOnIOThread(ClientNetworkComponents* net_components) {
   net_components->GetBrowserConnectionHandler()->DropCurrentConnection();
 }
 
-void AppendDefaultCommandLineFlags(base::CommandLine* command_line) {
-  // Enables the updated compositing path before any tabs are created.
-  command_line->AppendSwitch(switches::kEnableUpdatedCompositingPath);
-}
-
 }  // namespace
 
 // This function is declared in //blimp/client/public/blimp_client_context.h,
@@ -147,8 +142,6 @@ BlimpClientContextImpl::BlimpClientContextImpl(
       FROM_HERE, base::Bind(&ClientNetworkComponents::Initialize,
                             base::Unretained(net_components_.get())));
 
-  AppendDefaultCommandLineFlags(base::CommandLine::ForCurrentProcess());
-
   UMA_HISTOGRAM_BOOLEAN("Blimp.Supported", true);
 }