Issue #80 - Fix up gfx/ipc and gfx/src for Linux.

This removes an unused Telemetry enum

gfx/ipc/GPUChild.cpp

@@ -5,6 +5,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "GPUChild.h"
 #include "gfxConfig.h"
+#include "gfxPlatform.h"
 #include "gfxPrefs.h"
 #include "GPUProcessHost.h"
 #include "GPUProcessManager.h"

gfx/src/gfxTelemetry.h

@@ -58,12 +58,6 @@ const char* FeatureStatusToString(FeatureStatus aStatus);
 bool IsFeatureStatusFailure(FeatureStatus aStatus);
 bool IsFeatureStatusSuccess(FeatureStatus aStatus);
 
-enum class TelemetryDeviceCode : uint32_t {
-  Content = 0,
-  Image = 1,
-  D2D1 = 2
-};
-
 } // namespace gfx
 } // namespace mozilla