Add new tab button to desktop tabs view

app/src/main/java/acr/browser/lightning/activity/BrowserActivity.java

@@ -1023,6 +1023,11 @@ public abstract class BrowserActivity extends ThemableBrowserActivity implements
         return mPresenter.newTab(url, show);
     }
 
+    @Override
+    public void newTabClicked() {
+        mPresenter.newTab(null, true);
+    }
+
     // TODO move this to presenter
     private synchronized void deleteTab(int position) {
         mPresenter.deleteTab(position);

app/src/main/java/acr/browser/lightning/controller/UIController.java

@@ -53,4 +53,6 @@ public interface UIController {
 
     void showCloseDialog(int position);
 
+    void newTabClicked();
+
 }

app/src/main/java/acr/browser/lightning/fragment/TabsFragment.java

@@ -112,6 +112,14 @@ public class TabsFragment extends Fragment implements View.OnClickListener, View
         } else {
             view = inflater.inflate(R.layout.tab_strip, container, false);
             layoutManager = new LinearLayoutManager(getContext(), LinearLayoutManager.HORIZONTAL, false);
+            ImageView newTab = (ImageView) view.findViewById(R.id.new_tab_button);
+            newTab.setColorFilter(ThemeUtils.getIconDarkThemeColor(getActivity()));
+            newTab.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    mUiController.newTabClicked();
+                }
+            });
         }
         RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.tabs_list);
         recyclerView.setLayoutManager(layoutManager);

app/src/main/res/layout/tab_strip.xml

@@ -1,9 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="30dp"
     android:background="@color/black"
-    android:overScrollMode="never"
-    android:scrollbars="none"
-    android:id="@+id/tabs_list" />
+    android:orientation="horizontal"
+    android:weightSum="1">
+
+    <android.support.v7.widget.RecyclerView
+        android:id="@+id/tabs_list"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="1"
+        android:overScrollMode="never"
+        android:scrollbars="none"
+        android:fadingEdge="horizontal"/>
+
+    <ImageView
+        android:id="@+id/new_tab_button"
+        android:layout_width="30dp"
+        android:layout_height="match_parent"
+        android:background="?actionBarItemBackground"
+        android:src="@drawable/ic_action_plus"/>
+</LinearLayout>