Enable Accelerated Video Decode in Linux

content/common/sandbox_linux/bpf_gpu_policy_linux.cc

Index: content/common/sandbox_linux/bpf_gpu_policy_linux.cc
diff --git a/content/common/sandbox_linux/bpf_gpu_policy_linux.cc b/content/common/sandbox_linux/bpf_gpu_policy_linux.cc
index d0aefb3d693095ac34204225eca0b9131f58e285..e7f6f5024ef4b1b0aeb493e48b8fa4312e1d1abc 100644
--- a/content/common/sandbox_linux/bpf_gpu_policy_linux.cc
+++ b/content/common/sandbox_linux/bpf_gpu_policy_linux.cc
@@ -304,8 +304,12 @@ bool GpuProcessPolicy::PreSandboxHook() {
       const char* I965HybridDrvVideoPath = NULL;
 
       if (IsArchitectureX86_64()) {
+#if defined(OS_CHROMEOS)

[Jorge Lucangeli Obes, 2016/02/26 18:02:44]

Use the "IsChromeOS" function here.

[dshwang, 2016/02/26 18:15:34]

Done.

         I965DrvVideoPath = "/usr/lib64/va/drivers/i965_drv_video.so";
         I965HybridDrvVideoPath = "/usr/lib64/va/drivers/hybrid_drv_video.so";
+#else
+        I965DrvVideoPath = "/usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so";

[Jorge Lucangeli Obes, 2016/02/26 18:02:44]

Is this path guaranteed to be correct?

[dshwang, 2016/02/26 18:15:34]

no, it depends on linux distribution.

I have next plan to find this path in build time using python script.
If you want, I add the script in this CL.

[Jorge Lucangeli Obes, 2016/02/26 18:19:31]

I don't have a preference, just pointing out that the only reason why we were
hardcoding paths here is because we were dealing with Chrome OS.

[dshwang, 2016/02/26 18:34:59]

Added TODO comment. The script will cover ChromeOS also.

+#endif
       } else if (IsArchitectureI386()) {
         I965DrvVideoPath = "/usr/lib/va/drivers/i965_drv_video.so";
       }