WebApp splashscreen: add UMA to record how a splashscreen is constructed.

chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappSplashScreenBackgroundColorTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappSplashScreenBackgroundColorTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappSplashScreenBackgroundColorTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappSplashScreenBackgroundColorTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..f45c25a1b5c9b817835b7e7b7b852c9b997298d3
--- /dev/null
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappSplashScreenBackgroundColorTest.java
@@ -0,0 +1,37 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.webapps;
+
+import android.content.Intent;
+import android.graphics.Color;
+import android.test.suitebuilder.annotation.SmallTest;
+
+import org.chromium.base.metrics.RecordHistogram;
+import org.chromium.base.test.util.Feature;
+import org.chromium.chrome.browser.ShortcutHelper;
+import org.chromium.chrome.browser.metrics.WebappUma;
+
+/**
+ * Tests for splash screens with EXTRA_BACKGROND_COLOR specified in the Intent.
+ */
+public class WebappSplashScreenBackgroundColorTest extends WebappActivityTestBase {
+
+    @Override
+    protected Intent createIntent() {
+        Intent intent = super.createIntent();
+        intent.putExtra(ShortcutHelper.EXTRA_BACKGROUND_COLOR, (long) Color.GREEN);
+        return intent;
+    }
+
+    // TODO(mlamouri): test that the background color is actually shown.
+
+    @SmallTest
+    @Feature({"Webapps"})
+    public void testUmaBackgroundColorCustom() {
+        assertEquals(1, RecordHistogram.getHistogramValueCountForTesting(
+                HISTOGRAM_SPLASHSCREEN_BACKGROUNDCOLOR,
+                WebappUma.SPLASHSCREEN_COLOR_STATUS_CUSTOM));
+    }
+}