[Android] Add the option to show the on-screen FPS counter.

Source/Android/res/values-ja/strings.xml

@@ -80,6 +80,8 @@
     <string name="opengl_es3">OpenGL ES 3</string>
     <string name="video_backend">ビデオレンダラ</string>
     <string name="video_backend_to_use">使用するビデオレンダラー</string>
+    <string name="show_fps">FPSを表示</string>
+    <string name="show_fps_descrip">エミュレーション速度の指標として、画面左上に毎秒レンダリングされた フレーム数を表示します。</string>
     <string name="draw_onscreen_controls">画面上のコントロールを描画</string>
     
     <string name="enhancements">画質向上の設定</string>

Source/Android/res/values/strings.xml

@@ -80,6 +80,8 @@
     <string name="opengl_es3">OpenGL ES 3</string>
     <string name="video_backend">Video Backend</string>
     <string name="video_backend_to_use">Video backend to use</string>
+    <string name="show_fps">Show FPS</string>
+    <string name="show_fps_descrip">Show the number of frames rendered per second as a measure of emulation speed.</string>
     <string name="draw_onscreen_controls">Draw on-screen controls</string>
     
     <string name="enhancements">Enhancements</string>

Source/Android/res/xml/video_prefs.xml

@@ -125,6 +125,11 @@
        android:summary="@string/video_backend_to_use"
        android:title="@string/video_backend" />
 
+    <CheckBoxPreference
+       android:key="showFPS"
+       android:summary="@string/show_fps_descrip"
+       android:title="@string/show_fps"/>
+    
     <CheckBoxPreference
         android:defaultValue="true"
         android:key="drawOnscreenControls"

Source/Android/src/org/dolphinemu/dolphinemu/settings/UserPreferences.java

@@ -38,6 +38,7 @@ public final class UserPreferences
 		editor.putBoolean("dualCorePref", getConfig("Dolphin.ini", "Core", "CPUThread", "False").equals("True"));
 
 		editor.putString("gpuPref",               getConfig("Dolphin.ini", "Core", "GFXBackend ", "Software Renderer"));
+		editor.putBoolean("showFPS",              getConfig("gfx_opengl.ini", "Settings", "ShowFPS", "False").equals("True"));
 		editor.putBoolean("drawOnscreenControls", getConfig("Dolphin.ini", "Android", "ScreenControls", "True").equals("True"));
 
 		editor.putString("internalResolution",     getConfig("gfx_opengl.ini", "Settings", "EFBScale", "2") );
@@ -120,6 +121,9 @@ public final class UserPreferences
 		// Current video backend being used. Falls back to software rendering upon error.
 		String currentVideoBackend = prefs.getString("gpuPref", "Software Rendering");
 
+		// Whether or not FPS will be displayed on-screen.
+		boolean showingFPS = prefs.getBoolean("showFPS", false);
+
 		// Whether or not to draw on-screen controls.
 		boolean drawingOnscreenControls = prefs.getBoolean("drawOnscreenControls", true);
 
@@ -172,6 +176,7 @@ public final class UserPreferences
 
 		// General Video Settings
 		NativeLibrary.SetConfig("Dolphin.ini", "Core", "GFXBackend", currentVideoBackend);
+		NativeLibrary.SetConfig("gfx_opengl.ini", "Settings", "ShowFPS", showingFPS ? "True" : "False");
 		NativeLibrary.SetConfig("Dolphin.ini", "Android", "ScreenControls", drawingOnscreenControls ? "True" : "False");
 
 		// Video Hack Settings