Expose registered histograms from FeedbackCollector

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

Index: chrome/android/java/src/org/chromium/chrome/browser/feedback/FeedbackCollector.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/feedback/FeedbackCollector.java b/chrome/android/java/src/org/chromium/chrome/browser/feedback/FeedbackCollector.java
index 367923725a0e81d2a9194f4926d89e83fae5d731..1ce132c85c6d40627e2cc397d69cfa93cca54a55 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/feedback/FeedbackCollector.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/feedback/FeedbackCollector.java
@@ -12,6 +12,7 @@ import android.text.TextUtils;
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.VisibleForTesting;
+import org.chromium.base.metrics.StatisticsRecorderAndroid;
 import org.chromium.blimp_public.BlimpClientContext;
 import org.chromium.chrome.browser.blimp.BlimpClientContextFactory;
 import org.chromium.chrome.browser.net.spdyproxy.DataReductionProxySettings;
@@ -72,6 +73,11 @@ public class FeedbackCollector
     private Bitmap mScreenshot;
 
     /**
+     * All the registered histograms as JSON text.
+     */
+    private String mHistograms;
+
+    /**
      * A flag indicating whether gathering connection data has finished.
      */
     private boolean mConnectivityTaskFinished;
@@ -128,6 +134,9 @@ public class FeedbackCollector
         postTimeoutTask();
         mConnectivityTask = ConnectivityTask.create(mProfile, CONNECTIVITY_CHECK_TIMEOUT_MS, this);
         ScreenshotTask.create(activity, this);
+        if (!mProfile.isOffTheRecord()) {
+            mHistograms = StatisticsRecorderAndroid.toJson();
+        }
     }
 
     /**
@@ -232,6 +241,10 @@ public class FeedbackCollector
         return mScreenshot;
     }
 
+    public String getHistograms() {

[nyquist, 2016/10/03 20:55:38]

Nit: Add a comment as to what type of data this is. Where does it come from?
What format is it in? Etc.

[tbansal1, 2016/10/04 03:34:11]

I added a comment. Let me know if it is insufficient.

+        return mHistograms;
+    }
+
     /**
      * @return the collected data as a {@link Bundle}.
      */