Remove a bunch of TOOLKIT_GTK in content/ and gpu/, as well as NPAPI plugins on linux

content/common/sandbox_linux/bpf_ppapi_policy_linux.cc

Index: content/common/sandbox_linux/bpf_ppapi_policy_linux.cc
diff --git a/content/common/sandbox_linux/bpf_ppapi_policy_linux.cc b/content/common/sandbox_linux/bpf_ppapi_policy_linux.cc
index 9e0e257e0b74fae121aa7f41c02d9a250e168c43..3a59bfc25d948c63e20bd9f8d54eb47c731018a8 100644
--- a/content/common/sandbox_linux/bpf_ppapi_policy_linux.cc
+++ b/content/common/sandbox_linux/bpf_ppapi_policy_linux.cc
@@ -18,18 +18,6 @@ using sandbox::SyscallSets;
 
 namespace content {
 
-namespace {
-
-inline bool IsUsingToolKitGtk() {
-#if defined(TOOLKIT_GTK)
-  return true;
-#else
-  return false;
-#endif
-}
-
-}  // namespace
-
 PpapiProcessPolicy::PpapiProcessPolicy() {}
 PpapiProcessPolicy::~PpapiProcessPolicy() {}
 
@@ -51,17 +39,6 @@ ErrorCode PpapiProcessPolicy::EvaluateSyscall(SandboxBPF* sandbox,
     case __NR_ioctl:
       return ErrorCode(ENOTTY);  // Flash Access.
     default:
-      if (IsUsingToolKitGtk()) {
-#if defined(__x86_64__) || defined(__arm__)
-        if (SyscallSets::IsSystemVSharedMemory(sysno))
-          return ErrorCode(ErrorCode::ERR_ALLOWED);
-#endif
-#if defined(__i386__)
-        if (SyscallSets::IsSystemVIpc(sysno))
-          return ErrorCode(ErrorCode::ERR_ALLOWED);
-#endif
-      }
-
       // Default on the baseline policy.
       return SandboxBPFBasePolicy::EvaluateSyscall(sandbox, sysno);
   }