Android: Implement new EmulationActivity.

Source/Android/app/src/main/res/layout/activity_emulation.xml

@@ -0,0 +1,5 @@
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+             android:layout_width="match_parent"
+             android:layout_height="match_parent"
+             android:id="@+id/frame_content">
+</FrameLayout>

Source/Android/app/src/main/res/layout/activity_game_grid.xml

@@ -9,7 +9,7 @@
         android:id="@+id/toolbar_game_list"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:background="@color/dolphin_blue"
+        android:background="?android:colorPrimary"
         android:minHeight="?android:attr/actionBarSize"
         android:theme="@android:style/ThemeOverlay.Material.Dark.ActionBar"
         android:elevation="6dp"/>

Source/Android/app/src/main/res/layout/fragment_emulation.xml

@@ -0,0 +1,22 @@
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+             xmlns:tools="http://schemas.android.com/tools"
+             android:layout_width="match_parent"
+             android:layout_height="match_parent"
+             tools:context="org.dolphinemu.dolphinemu.fragments.EmulationFragment">
+
+    <!-- This is what everything is rendered to during emulation -->
+    <org.dolphinemu.dolphinemu.emulation.NativeGLSurfaceView
+        android:id="@+id/surface_emulation"
+        android:layout_height="match_parent"
+        android:layout_width="match_parent"
+        android:focusable="false"
+        android:focusableInTouchMode="false"/>
+
+    <!-- This is the onscreen input overlay -->
+    <org.dolphinemu.dolphinemu.emulation.overlay.InputOverlay
+        android:id="@+id/surface_input_overlay"
+        android:layout_height="match_parent"
+        android:layout_width="match_parent"
+        android:focusable="true"
+        android:focusableInTouchMode="true"/>
+</FrameLayout>