Patch to compression tests. Transform Surrogate is not implemented

Added DragCorrector and PPIViewer utilities

--HG--
branch : develop_5.3

Scripts/Editor/CompressionTests.cs

@@ -146,7 +146,6 @@ public class CompressionTests  {
     {
         public Vector3 myPosition;
         public Vector3[] myPositionHistory;
-        public Transform mytransform;
         public string[] myChatHistory;
     }
 

Scripts/Utilities/DragCorrector.cs

@@ -0,0 +1,31 @@
+/// Credit FireOApache 
+/// sourced from: http://answers.unity3d.com/questions/1149417/ui-button-onclick-sensitivity-for-high-dpi-devices.html#answer-1197307
+
+/*USAGE:
+Simply place the script on the EventSystem in the scene to correct the drag thresholds*/
+
+using UnityEngine.EventSystems;
+
+namespace UnityEngine.UI.Extensions
+{
+    [RequireComponent(typeof(EventSystem))]
+    [AddComponentMenu("UI/Extensions/DragCorrector")]
+    public class DragCorrector : MonoBehaviour
+    {
+        public int baseTH = 6;
+        public int basePPI = 210;
+        public int dragTH = 0;
+
+        void Start()
+        {
+            dragTH = baseTH * (int)Screen.dpi / basePPI;
+
+            EventSystem es = GetComponent<EventSystem>();
+
+            if (es)
+            {
+                es.pixelDragThreshold = dragTH;
+            }
+        }
+    }
+}

Scripts/Utilities/DragCorrector.cs.meta

@@ -0,0 +1,12 @@
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+guid: af1c809ef037025409983d19f9b0baac
+timeCreated: 1464969622
+licenseType: Pro
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Scripts/Utilities/PPIViewer.cs

@@ -0,0 +1,28 @@
+/// Credit FireOApache 
+/// sourced from: http://answers.unity3d.com/questions/1149417/ui-button-onclick-sensitivity-for-high-dpi-devices.html#answer-1197307
+
+/*USAGE:
+Simply place the script on A Text control in the scene to display the current PPI / DPI of the sceen*/
+
+namespace UnityEngine.UI.Extensions
+{
+    [RequireComponent(typeof(Text))]
+    [AddComponentMenu("UI/Extensions/PPIViewer")]
+    public class PPIViewer : MonoBehaviour
+    {
+        private Text label;
+
+        void Awake()
+        {
+            label = GetComponent<Text>();
+        }
+
+        void Start()
+        {
+            if (label != null)
+            {
+                label.text = "PPI: " + Screen.dpi.ToString();
+            }
+        }
+    }
+}

Scripts/Utilities/PPIViewer.cs.meta

@@ -0,0 +1,12 @@
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+guid: b0f2698294b9b524bb75cb394378eb6e
+timeCreated: 1464969622
+licenseType: Pro
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+  defaultReferences: []
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