Add chromium_code: 1 to surface.gyp and gl.gyp to pick up -Werror.

It looks like this was dropped accidentally in http://codereview.chromium.org/6718027 (surface.gyp) and http://codereview.chromium.org/6722026 (gl.gyp)

Remove now-redudant code that's implied by chromium_code: 1.

Fix the warnings that have crept in since chromium_code: 1 was removed.

BUG=none
TEST=none


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=91598

Review URL: http://codereview.chromium.org/7227009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@91813 0039d316-1c4b-4281-b951-d872f2087c98
GLvoid StubGLGetIntegerv(GLenum pname, GLint* params) {
  glGetIntegerv(pname, params);
}

GLvoid StubGLGetIntegerv(GLenum pname, GLint* params) {
  glGetIntegerv(pname, params);
}
