GFXBench: New workload

Creating a new workload to execute the following tests on GFXBench.

* Car Chase
* Car Chase Offscreen
* Manhattan 3.1
* 1080p Manhattan 3.1 Offscreen
* 1440p Manhattan 3.1 Offscreen
* Tessellation
* Tessellation Offscreen

wa/workloads/gfxbench/uiauto/app/build.gradle

@@ -0,0 +1,41 @@
+apply plugin: 'com.android.application'
+
+def packageName = "com.arm.wa.uiauto.gfxbench"
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.3"
+    defaultConfig {
+        applicationId "${packageName}"
+        minSdkVersion 18
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+        applicationVariants.all { variant ->
+            variant.outputs.each { output ->
+                output.outputFile = file("$project.buildDir/apk/${packageName}.apk")
+            }
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    compile 'com.android.support.test:runner:0.5'
+    compile 'com.android.support.test:rules:0.5'
+    compile 'com.android.support.test.uiautomator:uiautomator-v18:2.1.2'
+    compile(name: 'uiauto', ext:'aar')
+}
+
+repositories {
+    flatDir {
+        dirs 'libs'
+    }
+}