Cast the scratch resource key in order to fix a warning

Cast the scratch resource key in order to fix a warning

Cast the generated scratch resource key to GrScratchKey::ResourceType.
The key is generated with atomic ops that operate on int32_t, while
the resource type is unsigned.

Fixes a compile-breaking warning with gcc (Ubuntu/Linaro
4.6.4-1ubuntu1~12.04) 4.6.4.

[Kimmo Kinnunen, 2015-01-02 06:52:49]

kkinnunen@nvidia.com changed reviewers:
+ bsalomon@google.com, robertphillips@google.com

[robertphillips, 2015-01-02 21:27:54]

Prior to https://codereview.chromium.org/815833004/ (Add a simpler key type for
scratch resource keys), ResourceType was a uint8_t. Can the warning be fixed
however it was working before (as with the uint8_t but now with a uint32_t)?

[Kimmo Kinnunen, 2015-01-05 08:56:26]

On 2015/01/02 21:27:54, robertphillips wrote:
> Prior to https://codereview.chromium.org/815833004/ (Add a simpler key type
for
> scratch resource keys), ResourceType was a uint8_t. Can the warning be fixed
> however it was working before (as with the uint8_t but now with a uint32_t)?

How about now?

BTW: am I doing something wrong, because I see the warnings and apparently
nobody else does?

[robertphillips, 2015-01-05 20:35:58]

Does https://codereview.chromium.org/827923006/ (Cap id size returned by
GrScratchKey::GenerateResourceType) fix the compiler warning for you?

[Kimmo Kinnunen, 2015-01-07 07:23:37]

On 2015/01/05 20:35:58, robertphillips wrote:
> Does https://codereview.chromium.org/827923006/ (Cap id size returned by
> GrScratchKey::GenerateResourceType) fix the compiler warning for you?

Works