Bug 217426

Implement GraphicsContextGLOpenGL::checkGPUStatus() for ANGLE backend



GLES/GL implementation:
#if USE(OPENGL)
-    CGLContextObj cglContext = static_cast<CGLContextObj>(platformGraphicsContextGL());
-    CGLGetParameter(cglContext, kCGLCPGPURestartStatus, &restartStatus);
-    if (restartStatus == kCGLCPGPURestartStatusBlacklisted) {
-        LOG(WebGL, "The GPU has blocklisted us (%p). Terminating.", this);
-        exit(EX_OSERR);
-    }
-    if (restartStatus == kCGLCPGPURestartStatusCaused) {
-        LOG(WebGL, "The GPU has reset us (%p). Lose the context.", this);
-        forceContextLost();
-        CGLSetCurrentContext(0);
-    }
-#elif USE(OPENGL_ES)
-    EAGLContext* currentContext = static_cast<EAGLContext*>(PlatformGraphicsContextGL());
-    [currentContext getParameter:kEAGLCPGPURestartStatus to:&restartStatus];
-    if (restartStatus == kEAGLCPGPURestartStatusCaused || restartStatus == kEAGLCPGPURestartStatusBlacklisted) {
-        LOG(WebGL, "The GPU has either reset or blocklisted us (%p). Lose the context.", this);
-        forceContextLost();
-        [EAGLContext setCurrentContext:0];
-    }