Implement remote process listing in Linux platform.

[clayborg]

lgtm

[sas]

Update test plan.

[sas]

Closed by commit rL223752 (authored by @sas).

lldb/trunk/source/Plugins/Platform/Linux/PlatformLinux.h

public:
 
         Error
         GetFileWithUUID (const FileSpec &platform_file,
                          const UUID* uuid, FileSpec &local_file) override;
 
         bool
         GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &proc_info) override;
 
+        uint32_t
+        FindProcesses (const ProcessInstanceInfoMatch &match_info,
+                       ProcessInstanceInfoList &process_infos) override;
+
         bool
         GetSupportedArchitectureAtIndex (uint32_t idx, ArchSpec &arch) override;
 
         size_t
         GetSoftwareBreakpointTrapOpcode (Target &target, 
                                          BreakpointSite *bp_site) override;
 
         int32_t

lldb/trunk/source/Plugins/Platform/Linux/PlatformLinux.cpp

PlatformLinux::GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info)
     else
     {
         if (m_remote_platform_sp) 
             success = m_remote_platform_sp->GetProcessInfo (pid, process_info);
     }
     return success;
 }
 
+uint32_t
+PlatformLinux::FindProcesses (const ProcessInstanceInfoMatch &match_info,
+                              ProcessInstanceInfoList &process_infos)
+{
+    uint32_t match_count = 0;
+    if (IsHost())
+    {
+        // Let the base class figure out the host details
+        match_count = Platform::FindProcesses (match_info, process_infos);
+    }
+    else
+    {
+        // If we are remote, we can only return results if we are connected
+        if (m_remote_platform_sp)
+            match_count = m_remote_platform_sp->FindProcesses (match_info, process_infos);
+    }
+    return match_count;
+}
+
 bool
 PlatformLinux::GetSupportedArchitectureAtIndex (uint32_t idx, ArchSpec &arch)
 {
     if (idx == 0)
     {
         arch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
         return arch.IsValid();
     }