cc:: Add remote mode to the compositor

cc/test/proxy_main_for_test.cc

Index: cc/test/proxy_main_for_test.cc
diff --git a/cc/test/proxy_main_for_test.cc b/cc/test/proxy_main_for_test.cc
index 4588422e09abaa642ce81edf087c8c0166170e01..f7ac6e46c15b4e6e35fee25fee98c808cce79f24 100644
--- a/cc/test/proxy_main_for_test.cc
+++ b/cc/test/proxy_main_for_test.cc
@@ -5,6 +5,7 @@
 #include "cc/test/proxy_main_for_test.h"
 
 #include "cc/test/threaded_channel_for_test.h"
+#include "cc/trees/remote_channel_main.h"
 
 namespace cc {
 
@@ -21,6 +22,18 @@ scoped_ptr<ProxyMain> ProxyMainForTest::CreateThreaded(
   return proxy_main;
 }
 
+scoped_ptr<ProxyMain> ProxyMainForTest::CreateRemote(
+    TestHooks* test_hooks,
+    RemoteProtoChannel* remote_proto_channel,
+    LayerTreeHost* host,
+    TaskRunnerProvider* task_runner_provider) {
+  scoped_ptr<ProxyMain> proxy_main(
+      new ProxyMainForTest(test_hooks, host, task_runner_provider, nullptr));
+  proxy_main->SetChannel(RemoteChannelMain::Create(
+      remote_proto_channel, proxy_main.get(), task_runner_provider));
+  return proxy_main;
+}
+
 ProxyMainForTest::~ProxyMainForTest() {}
 
 ProxyMainForTest::ProxyMainForTest(