GLContext no longer holds a pointer to a GLSurface.

ui/gfx/gl/gl_surface_linux.cc

Index: ui/gfx/gl/gl_surface_linux.cc
===================================================================
--- ui/gfx/gl/gl_surface_linux.cc	(revision 86168)
+++ ui/gfx/gl/gl_surface_linux.cc	(working copy)
@@ -96,7 +96,7 @@
 
 NativeViewGLSurfaceOSMesa::NativeViewGLSurfaceOSMesa(
     gfx::PluginWindowHandle window)
-  : GLSurfaceOSMesa(gfx::Size()),
+  : GLSurfaceOSMesa(OSMESA_BGRA, gfx::Size()),
     window_graphics_context_(0),
     window_(window),
     pixmap_graphics_context_(0),
@@ -280,7 +280,8 @@
 GLSurface* GLSurface::CreateOffscreenGLSurface(const gfx::Size& size) {
   switch (GetGLImplementation()) {
     case kGLImplementationOSMesaGL: {
-      scoped_ptr<GLSurfaceOSMesa> surface(new GLSurfaceOSMesa(size));
+      scoped_ptr<GLSurfaceOSMesa> surface(new GLSurfaceOSMesa(OSMESA_RGBA,
+                                                              size));
       if (!surface->Initialize())
         return NULL;