Advertise GL_EXT_texture_storage.

src/libGLESv2/Context.cpp

@@ -3428,6 +3428,7 @@ void Context::initExtensionString()
     }
 
     mExtensionString += "GL_EXT_texture_format_BGRA8888 ";
+    mExtensionString += "GL_EXT_texture_storage ";
 
     // ANGLE-specific extensions
     mExtensionString += "GL_ANGLE_framebuffer_blit ";

src/libGLESv2/libGLESv2.cpp

@@ -6009,6 +6009,7 @@ __eglMustCastToProperFunctionPointerType __stdcall glGetProcAddress(const char *
         {"glFinishFenceNV", (__eglMustCastToProperFunctionPointerType)glFinishFenceNV},
         {"glSetFenceNV", (__eglMustCastToProperFunctionPointerType)glSetFenceNV},
         {"glGetTranslatedShaderSourceANGLE", (__eglMustCastToProperFunctionPointerType)glGetTranslatedShaderSourceANGLE},
+        {"glTexStorage2DEXT", (__eglMustCastToProperFunctionPointerType)glTexStorage2DEXT},
     };
 
     for (int ext = 0; ext < sizeof(glExtensions) / sizeof(Extension); ext++)