Move code around to fix build with system mesa.

gpu/EGL/eglextchromium.h

+// Copyright (c) 2013 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.
+
+// This file contains Chromium-specific EGL extensions declarations.
+
+#ifndef GPU_EGL_EGLEXTCHROMIUM_H_
+#define GPU_EGL_EGLEXTCHROMIUM_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <EGL/eglplatform.h>
+
+/* EGLSyncControlCHROMIUM requires 64-bit uint support */
+#if KHRONOS_SUPPORT_INT64
+#ifndef EGL_CHROMIUM_sync_control
+#define EGL_CHROMIUM_sync_control 1
+typedef khronos_uint64_t EGLuint64CHROMIUM;
+#ifdef EGL_EGLEXT_PROTOTYPES
+EGLAPI EGLBoolean EGLAPIENTRY eglGetSyncValuesCHROMIUM(
+    EGLDisplay dpy, EGLSurface surface, EGLuint64CHROMIUM *ust,
+    EGLuint64CHROMIUM *msc, EGLuint64CHROMIUM *sbc);
+#endif /* EGL_EGLEXT_PROTOTYPES */
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLGETSYNCVALUESCHROMIUMPROC)
+    (EGLDisplay dpy, EGLSurface surface, EGLuint64CHROMIUM *ust,
+     EGLuint64CHROMIUM *msc, EGLuint64CHROMIUM *sbc);
+#endif
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#define  // GPU_EGL_EGLEXTCHROMIUM_H_