SkyShell should be able to draw a green square with GL

sky/shell/sky_main.cc

 // Copyright 2015 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 "sky/shell/sky_main.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/threading/simple_thread.h"
 #include "jni/SkyMain_jni.h"
+#include "sky/shell/shell.h"
+#include "ui/gl/gl_surface_egl.h"
 
 using base::LazyInstance;
 
 namespace sky {
 namespace shell {
 
 namespace {
 
 LazyInstance<scoped_ptr<base::MessageLoop>> g_java_message_loop =
     LAZY_INSTANCE_INITIALIZER;
 
 LazyInstance<base::android::ScopedJavaGlobalRef<jobject>> g_main_activiy =
     LAZY_INSTANCE_INITIALIZER;
 
+LazyInstance<scoped_ptr<Shell>> g_shell = LAZY_INSTANCE_INITIALIZER;
+
 void InitializeLogging() {
   logging::LoggingSettings settings;
   settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
   logging::InitLogging(settings);
   // To view log output with IDs and timestamps use "adb logcat -v threadtime".
   logging::SetLogItems(false,   // Process ID
                        false,   // Thread ID
                        false,   // Timestamp
                        false);  // Tick count
 }
 
 }  // namespace
 
 static void Init(JNIEnv* env,
                  jclass clazz,
                  jobject activity) {
   g_main_activiy.Get().Reset(env, activity);
 
   base::android::ScopedJavaLocalRef<jobject> scoped_activity(env, activity);
   base::android::InitApplicationContext(env, scoped_activity);
 
   base::CommandLine::Init(0, nullptr);
 
   InitializeLogging();
 
   g_java_message_loop.Get().reset(new base::MessageLoopForUI);
   base::MessageLoopForUI::current()->Start();
+
+  gfx::GLSurface::InitializeOneOff();
+
+  g_shell.Get().reset(new Shell(g_java_message_loop.Get()->task_runner()));
+
+  g_java_message_loop.Get()->PostTask(
+      FROM_HERE,
+      base::Bind(&Shell::Init, base::Unretained(g_shell.Get().get())));
 }
 
 static jboolean Start(JNIEnv* env, jclass clazz) {
   LOG(INFO) << "Native code started!";
   return true;
 }
 
 bool RegisterSkyMain(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace sky
 }  // namespace mojo