Add whether device is a low-end phone to feedback.

BUG=783427

Change-Id: Id1a43e33e83c7cfbfa2a86f82adc286e3c2b0c29
Reviewed-on: https://chromium-review.googlesource.com/775995Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Maria Khomenko <mariakhomenko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517507}

chrome/android/java/src/org/chromium/chrome/browser/feedback/FeedbackCollector.java

@@ -79,6 +79,7 @@ public class FeedbackCollector implements Runnable {
         sources.add(new DataReductionProxyFeedbackSource(profile));
         sources.add(new HistogramFeedbackSource(profile));
         sources.add(new ChromeHomeFeedbackSource(profile));
+        sources.add(new LowEndDeviceFeedbackSource());
 
         return sources;
     }

chrome/android/java/src/org/chromium/chrome/browser/feedback/LowEndDeviceFeedbackSource.java

+// Copyright 2017 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.feedback;
+
+import org.chromium.base.SysUtils;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Provides data about whether the feedback comes from a low-end device.
+ */
+public class LowEndDeviceFeedbackSource implements FeedbackSource {
+    private static final String LOW_END_DEVICE_KEY = "lowmem";
+    private final HashMap<String, String> mMap;
+
+    LowEndDeviceFeedbackSource() {
+        mMap = new HashMap<String, String>(1);
+        mMap.put(LOW_END_DEVICE_KEY, Boolean.toString(SysUtils.isLowEndDevice()));
+    }
+
+    @Override
+    public Map<String, String> getFeedback() {
+        return mMap;
+    }
+}

chrome/android/java_sources.gni

@@ -415,6 +415,7 @@ chrome_java_sources = [
   "java/src/org/chromium/chrome/browser/feedback/FeedbackReporter.java",
   "java/src/org/chromium/chrome/browser/feedback/FeedbackSource.java",
   "java/src/org/chromium/chrome/browser/feedback/HistogramFeedbackSource.java",
+  "java/src/org/chromium/chrome/browser/feedback/LowEndDeviceFeedbackSource.java",
   "java/src/org/chromium/chrome/browser/feedback/ScreenshotSource.java",
   "java/src/org/chromium/chrome/browser/feedback/ScreenshotTask.java",
   "java/src/org/chromium/chrome/browser/feedback/StaticScreenshotSource.java",