ozone: gbm: Fix libglapi linkage errors under gbm

ui/ozone/platform/dri/ozone_platform_gbm.cc

 // Copyright 2014 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/ozone/platform/dri/ozone_platform_gbm.h"
 
+#include <dlfcn.h>
 #include <stdlib.h>
 #include <gbm.h>
 
 #include "ui/base/cursor/ozone/cursor_factory_ozone.h"
 #include "ui/events/ozone/device/device_manager.h"
 #include "ui/events/ozone/evdev/event_factory_evdev.h"
 #include "ui/ozone/ozone_platform.h"
 #include "ui/ozone/platform/dri/dri_wrapper.h"
 #include "ui/ozone/platform/dri/gbm_surface.h"
 #include "ui/ozone/platform/dri/gbm_surface_factory.h"
 #include "ui/ozone/platform/dri/scanout_surface.h"
 #include "ui/ozone/platform/dri/screen_manager.h"
 
 #if defined(OS_CHROMEOS)
 #include "ui/ozone/common/chromeos/native_display_delegate_ozone.h"
 #include "ui/ozone/common/chromeos/touchscreen_device_manager_ozone.h"
 #endif
 
 namespace ui {
 
 namespace {
 
 const char kDefaultGraphicsCardPath[] = "/dev/dri/card0";
 
 class GbmSurfaceGenerator : public ScanoutSurfaceGenerator {
  public:
   GbmSurfaceGenerator(DriWrapper* dri)
       : dri_(dri),
+        glapi_lib_(dlopen("libglapi.so.0", RTLD_LAZY | RTLD_GLOBAL)),
         device_(gbm_create_device(dri_->get_fd())) {}
   virtual ~GbmSurfaceGenerator() {
     gbm_device_destroy(device_);
+    if (glapi_lib_)
+      dlclose(glapi_lib_);
   }
 
   gbm_device* device() const { return device_; }
 
   virtual ScanoutSurface* Create(const gfx::Size& size) OVERRIDE {
     return new GbmSurface(device_, dri_, size);
   }
 
  private:
   DriWrapper* dri_;  // Not owned.
 
+  // HACK: gbm drivers have broken linkage
+  void *glapi_lib_;
+
   gbm_device* device_;
 
   DISALLOW_COPY_AND_ASSIGN(GbmSurfaceGenerator);
 };
 
 class OzonePlatformGbm : public OzonePlatform {
  public:
   OzonePlatformGbm() {}
   virtual ~OzonePlatformGbm() {}
 
@@ skipping 52 matching lines @@
   scoped_ptr<EventFactoryEvdev> event_factory_ozone_;
 
   DISALLOW_COPY_AND_ASSIGN(OzonePlatformGbm);
 };
 
 }  // namespace
 
 OzonePlatform* CreateOzonePlatformGbm() { return new OzonePlatformGbm; }
 
 }  // namespace ui