Remove unused feedback class in dom distiller component

chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerUIUtils.java

Index: chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerUIUtils.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerUIUtils.java b/chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerUIUtils.java
index fcf48f1785f113a5d5f2bc3d1f57985e663a37fd..1aa2994766cd3097c08683dab39d6b12ee62c1fd 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerUIUtils.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerUIUtils.java
@@ -7,16 +7,11 @@ package org.chromium.chrome.browser.dom_distiller;
 import android.app.Activity;
 import android.support.v7.app.AlertDialog;
 
-import org.chromium.base.ThreadUtils;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.base.metrics.RecordUserAction;
 import org.chromium.chrome.R;
-import org.chromium.chrome.browser.AppHooks;
 import org.chromium.chrome.browser.compositor.bottombar.OverlayPanel.StateChangeReason;
-import org.chromium.chrome.browser.feedback.FeedbackCollector;
-import org.chromium.chrome.browser.feedback.FeedbackReporter;
-import org.chromium.chrome.browser.profiles.Profile;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.ui.base.WindowAndroid;
 
@@ -25,13 +20,6 @@ import org.chromium.ui.base.WindowAndroid;
  */
 @JNINamespace("dom_distiller::android")
 public final class DomDistillerUIUtils {
-    private static final String DISTILLATION_QUALITY_KEY = "Distillation quality";
-    private static final String DISTILLATION_QUALITY_GOOD = "good";
-    private static final String DISTILLATION_QUALITY_BAD = "bad";
-
-    // Static handle to object for feedback reporting.
-    private static FeedbackReporter sFeedbackReporter;
-
     // Static handle to Reader Mode's manager.
     private static ReaderModeManagerDelegate sManagerDelegate;
 
@@ -44,36 +32,6 @@ public final class DomDistillerUIUtils {
     }
 
     /**
-     * A static method for native code to open the external feedback form UI.
-     * @param webContents The WebContents containing the distilled content.
-     * @param url The URL to report feedback for.
-     * @param good True if the feedback is good and false if not.
-     */
-    @CalledByNative
-    public static void reportFeedbackWithWebContents(
-            WebContents webContents, String url, final boolean good) {
-        ThreadUtils.assertOnUiThread();
-        // TODO(mdjones): It would be better to get the WebContents from the manager so that the
-        // native code does not need to depend on RenderFrame.
-        Activity activity = getActivityFromWebContents(webContents);
-        if (activity == null) return;
-
-        if (sFeedbackReporter == null) {
-            sFeedbackReporter = AppHooks.get().createFeedbackReporter();
-        }
-        FeedbackCollector.create(activity, Profile.getLastUsedProfile(), url,
-                new FeedbackCollector.FeedbackResult() {
-                    @Override
-                    public void onResult(FeedbackCollector collector) {
-                        String quality =
-                                good ? DISTILLATION_QUALITY_GOOD : DISTILLATION_QUALITY_BAD;
-                        collector.add(DISTILLATION_QUALITY_KEY, quality);
-                        sFeedbackReporter.reportFeedback(collector);
-                    }
-                });
-    }
-
-    /**
      * A static method for native code to call to open the distiller UI settings.
      * @param webContents The WebContents containing the distilled content.
      */