Add framework for sending feedback for Blimp.

blimp/client/core/feedback/android/java/src/org/chromium/blimp/core/feedback/BlimpFeedbackData.java

Index: blimp/client/core/feedback/android/java/src/org/chromium/blimp/core/feedback/BlimpFeedbackData.java
diff --git a/blimp/client/core/feedback/android/java/src/org/chromium/blimp/core/feedback/BlimpFeedbackData.java b/blimp/client/core/feedback/android/java/src/org/chromium/blimp/core/feedback/BlimpFeedbackData.java
new file mode 100644
index 0000000000000000000000000000000000000000..b68aa1cd7b7ae8754fda50268b4c8e9fccb49620
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+++ b/blimp/client/core/feedback/android/java/src/org/chromium/blimp/core/feedback/BlimpFeedbackData.java
@@ -0,0 +1,46 @@
+// Copyright 2016 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.blimp.core.feedback;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.JNINamespace;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * BlimpFeedbackData is used to gather data that would be helpful for an end user feedback
+ * report. It is created and populated from native code.
+ */
+@JNINamespace("blimp::client")
+public class BlimpFeedbackData {
+    /**
+     * Create a BlimpFeedbackData object.
+     */
+    @CalledByNative
+    private static BlimpFeedbackData create(String[] keys, String[] values) {
+        return new BlimpFeedbackData(keys, values);
+    }
+
+    private final Map<String, String> mData;
+
+    private BlimpFeedbackData(String[] keys, String[] values) {
+        if (keys == null || values == null || keys.length != values.length) {
+            throw new IllegalStateException("Invalid feedback data.");
+        }
+        mData = new HashMap<>();
+        for (int i = 0; i < keys.length; ++i) {
+            mData.put(keys[i], values[i]);
+        }
+    }
+
+    /**
+     * Builds and returns the feedback data map.
+     * @return the feedback data.
+     */
+    public Map<String, String> asMap() {
+        return mData;
+    }
+}