Add arc-dark chrome theme (#497)

Source code of my theme from https://chrome.google.com/webstore/detail/arc-dark-chrome-theme/adicoenigffoolephelklheejpcpoolk/

* Add arc-dark-theme .crx

* Delete manifest.json~

* Delete messages.json~

* Delete messages.json~

extra/Chrome/arc-dark-theme/_locales/en/messages.json

@@ -0,0 +1,10 @@
+{
+  "appName": {
+    "message": "Arc dark chrome theme",
+    "description": "The title of the application, displayed in the web store."
+  },
+  "appDesc": {
+    "message": "A Google Chrome theme made to match the colors of the dark arc theme by horst3180", 
+    "description":"The description of the application, displayed in the web store."
+  }
+}

extra/Chrome/arc-dark-theme/_locales/en_GB/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "Arc dark chrome theme"
+  },
+  "appDesc": {
+    "message": "A Google Chrome theme made to match the colours of the dark arc theme by horst3180"
+  }
+}

extra/Chrome/arc-dark-theme/_locales/en_US/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "Arc dark chrome theme"
+  },
+  "appDesc": {
+    "message": "A Google Chrome theme made to match the colors of the dark arc theme by horst3180"
+  }
+}

extra/Chrome/arc-dark-theme/_locales/fr/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "Arc dark thème"
+  },
+  "appDesc": {
+    "message": "Un thème de Google Chrome avec les couleurs du thème 'dark arc' de horst3180"
+  }
+}

extra/Chrome/arc-dark-theme/manifest.json

@@ -0,0 +1,68 @@
+{
+    "manifest_version":2,
+    "theme":{
+        "images":{
+            "theme_frame":"images/theme_frame.png",
+            "theme_toolbar":"images/theme_toolbar.png",
+            "theme_tab_background":"images/theme_tab_background.png"
+        },
+        "colors":{
+            "frame":[
+                47,
+                52,
+                63
+            ],
+            "toolbar":[
+                47,
+                52,
+                63
+            ],
+            "tab_text":[
+                238,
+                238,
+                238
+            ],
+            "tab_background_text":[
+                36,
+                36,
+                36
+            ],
+            "bookmark_text":[
+                238,
+                238,
+                238
+            ],
+            "ntp_background":[
+                64,
+                69,
+                82
+            ],
+            "ntp_text":[
+                238,
+                238,
+                238
+            ],
+            "button_background":[
+                59,
+                66,
+                80,
+                1
+            ]
+        },
+        "tints":{
+            "buttons":[
+                0,
+                0,
+                0.81
+            ]
+        },
+        "properties":{
+            "ntp_background_alignment":"bottom",
+            "ntp_background_repeat":"no-repeat"
+        }
+    },
+    "name":"__MSG_appName__",
+    "version":"1.1",
+    "description":"__MSG_appDesc__",
+    "default_locale":"en"
+}