dlopen the sonamed libs directly, like it has already been done for libGL.so.1,
as we don't want to Depend on the -dev packages for the .so files:
- libOSMesa.so.8: Mesa-libOSMesa-9.2.0-2
- libGLESv2.so.2: Mesa-libGLES-9.2.0-2
- libEGL.so.1: Mesa-libEGL-9.2.0-2
--- chromium-browser-30.0.1599.66/./ui/gl/gl_implementation_linux.cc~	2013-09-28 20:10:53.000000000 +0300
+++ chromium-browser-30.0.1599.66/./ui/gl/gl_implementation_linux.cc	2013-10-02 20:06:36.152324746 +0300
@@ -37,7 +37,7 @@
     return false;
   }
 
-  base::NativeLibrary library = LoadLibrary(module_path.Append("libosmesa.so"));
+  base::NativeLibrary library = LoadLibrary(module_path.Append("libOSMesa.so.8"));
   if (!library)
     return false;