Generate the Chrome policy schema at compile time.

Generate the Chrome policy schema at compile time.

The schema is represented by static structures that are generated at compile
time, so that no parsing is required at runtime.

BUG=270667

[Joao da Silva, 2013-09-24 17:57:50]

Here's the generator CL, if you want to have a look.

Unfortunately this requires a lot of relocations, which takes about 10Kbytes
(compared to 3Kbytes of the main array with all the policies) and probably has
an impact on startup time.

I'll think of alternatives. Ideas welcome :-)

[Mattias Nissler (ping if slow), 2013-09-24 18:47:40]

Have you figured out why the relocations are required?

[Joao da Silva, 2013-09-25 07:42:57]

On 2013/09/24 18:47:40, Mattias Nissler wrote:
> Have you figured out why the relocations are required?

Not yet. A static build surprisingly has the same problem; this may be due to
PIC. I'll see if that can be disabled for this file and whether it makes a
difference.

I did notice that if &kSchema doesn't escape the policy_constants.cc translation
unit then no relocations are generated, and the size increases by the expected
3K. But as soon as the getter exists AND is called from
browser_policy_connector.cc then the relocations are introduced again.