Disable hardware acceleration for ChromeActivities on low-end devices.

chrome/android/javatests/src/org/chromium/chrome/browser/hardware_acceleration/ManifestHWATest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/hardware_acceleration/ManifestHWATest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/hardware_acceleration/ManifestHWATest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/hardware_acceleration/ManifestHWATest.java
new file mode 100644
index 0000000000000000000000000000000000000000..1033c5212ebedc20bec94b60daec10899181209e
--- /dev/null
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/hardware_acceleration/ManifestHWATest.java
@@ -0,0 +1,39 @@
+// 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.hardware_acceleration;
+
+import android.content.Context;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.test.InstrumentationTestCase;
+import android.test.suitebuilder.annotation.SmallTest;
+
+import org.chromium.chrome.browser.ChromeActivity;
+
+/**
+ * Hardware acceleration-related manifest tests.
+ */
+public class ManifestHWATest extends InstrumentationTestCase {
+
+    @SmallTest
+    public void testAccelerationDisabled() throws Exception {
+        Context context = getInstrumentation().getTargetContext();
+        PackageInfo info = context.getPackageManager().getPackageInfo(
+                context.getApplicationInfo().packageName,
+                PackageManager.GET_ACTIVITIES);
+        for (ActivityInfo activityInfo : info.activities) {
+            String activityName = activityInfo.targetActivity != null
+                    ? activityInfo.targetActivity
+                    : activityInfo.name;
+            Class<?> activityClass = Class.forName(activityName);
+            if (ChromeActivity.class.isAssignableFrom(activityClass)) {
+                // Every activity derived from ChromeActivity must disable hardware
+                // acceleration in the manifest.
+                assertTrue(0 == (activityInfo.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED));
+            }
+        }
+    }
+}