Removed "compositor" child window that was created by the GPU process.

ui/gfx/gl/gl_context_egl.cc

 // Copyright (c) 2011 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 "ui/gfx/gl/gl_context_egl.h"
 
 #include "build/build_config.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "third_party/angle/include/EGL/egl.h"
@@ skipping 93 matching lines @@
                       surface_->GetHandle(),
                       context_)) {
     VLOG(1) << "eglMakeCurrent failed with error "
             << GetLastEGLErrorString();
     return false;
   }
 
   return true;
 }
 
+void GLContextEGL::ReleaseCurrent() {
+  if (!IsCurrent())
+    return;
+
+  eglMakeCurrent(GLSurfaceEGL::GetDisplay(),
+                 EGL_NO_SURFACE,
+                 EGL_NO_SURFACE,
+                 EGL_NO_CONTEXT);
+}
+
 bool GLContextEGL::IsCurrent() {
   DCHECK(context_);
-  return context_ == eglGetCurrentContext();
+  return context_ == eglGetCurrentContext() &&
+      surface_->GetHandle() == eglGetCurrentSurface(EGL_DRAW);
 }
 
 bool GLContextEGL::IsOffscreen() {
   // TODO(apatrick): remove this from GLContext interface.
   return surface_->IsOffscreen();
 }
 
 bool GLContextEGL::SwapBuffers() {
   // TODO(apatrick): remove this from GLContext interface.
   return surface_->SwapBuffers();
 }
 
 gfx::Size GLContextEGL::GetSize() {
   // TODO(apatrick): remove this from GLContext interface.
   return surface_->GetSize();
 }
 
+GLSurface* GLContextEGL::GetSurface() {
+  // TODO(apatrick): remove this from GLContext interface.
+  return surface_.get();
+}
+
 void* GLContextEGL::GetHandle() {
   return context_;
 }
 
 void GLContextEGL::SetSwapInterval(int interval) {
   DCHECK(IsCurrent());
   if (!eglSwapInterval(GLSurfaceEGL::GetDisplay(), interval)) {
     LOG(ERROR) << "eglSwapInterval failed with error "
                << GetLastEGLErrorString();
   }
 }
 
 }  // namespace gfx