Fix SafeAdd and SafeMultiply

BUG=145648,145544


Review URL: https://chromiumcodereview.appspot.com/10916165

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@155478 0039d316-1c4b-4281-b951-d872f2087c98
void GLES2DecoderImpl::ClearRealGLErrors() {
  GLenum error;
  while ((error = glGetError()) != GL_NO_ERROR) {
    if (error != GL_OUT_OF_MEMORY) {
      NOTREACHED() << "GL error " << error << " was unhandled.";
    }
  }
}

void GLES2DecoderImpl::ClearRealGLErrors() {
  GLenum error;
  while ((error = glGetError()) != GL_NO_ERROR) {
    if (error != GL_OUT_OF_MEMORY) {
      NOTREACHED() << "GL error " << error << " was unhandled.";
    }
  }
}
