[GPU] GLES2 lost context recovery

gpu/pgl/pgl.h

 // Copyright (c) 2010 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.
 
 #ifndef GPU_PGL_PGL_H
 #define GPU_PGL_PGL_H
 
 #include "npapi.h"
 #include "npapi_extensions.h"
 
+#define PGL_TRUE 1
+#define PGL_FALSE 0
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 typedef void* PGLContext;
-typedef bool PGLBoolean;
+typedef unsigned int PGLBoolean;
+typedef int32 PGLInt;
+
+// These are the same error codes as used by EGL.
+enum {
+  PGL_SUCCESS = 0x3000,
+  PGL_NOT_INITIALIZED = 0x3001,
+  PGL_BAD_CONTEXT = 0x3006,
+  PGL_BAD_PARAMETER = 0x300C,
+  PGL_CONTEXT_LOST = 0x300E
+};
 
 // Initialize the PGL library. This must have completed before any other PGL
 // functions are invoked.
 PGLBoolean pglInitialize();
 
 // Terminate the PGL library. This must be called after any other PGL functions
 // have completed.
 PGLBoolean pglTerminate();
 
 // Create A PGL context from a Pepper 3D device context.
 PGLContext pglCreateContext(NPP npp,
                             NPDevice* device,
                             NPDeviceContext3D* device_context);
 
 // Set the current PGL context for the calling thread.
 PGLBoolean pglMakeCurrent(PGLContext pgl_context);
 
 // Get the calling thread's current PGL context.
 PGLContext pglGetCurrentContext(void);
 
 // Display everything that has been rendered since the last call.
 PGLBoolean pglSwapBuffers(void);
 
 // Destroy the given PGL context.
 PGLBoolean pglDestroyContext(PGLContext pgl_context);
 
+// Return the current PGL error.
+PGLInt pglGetError();
+
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // GPU_PGL_PGL_H