Add Data Saver support to Cronet

components/cronet/android/java/src/org/chromium/net/UrlRequestContextConfig.java

Index: components/cronet/android/java/src/org/chromium/net/UrlRequestContextConfig.java
diff --git a/components/cronet/android/java/src/org/chromium/net/UrlRequestContextConfig.java b/components/cronet/android/java/src/org/chromium/net/UrlRequestContextConfig.java
index 810ce12c030ec62c0250b60db4d05597c797c9e5..915e7d7bcc8e2cac11c4dfd9432a0f27d4d8690c 100644
--- a/components/cronet/android/java/src/org/chromium/net/UrlRequestContextConfig.java
+++ b/components/cronet/android/java/src/org/chromium/net/UrlRequestContextConfig.java
@@ -102,6 +102,17 @@ public class UrlRequestContextConfig {
     }
 
     /**
+     * Boolean, enable Data Reduction Proxy if true.

[mmenke, 2015/04/01 15:46:14]

Need to describe what "key" is, and maybe rename it (api_key?)

[bengr, 2015/04/24 02:30:43]

Done. The format is TBD.

+     */
+    public UrlRequestContextConfig enableDataReductionProxy(boolean value,
+            String key) {
+        return (putBoolean(UrlRequestContextConfigList
+                        .ENABLE_DATA_REDUCTION_PROXY, value)
+                    .putString(UrlRequestContextConfigList
+                            .DATA_REDUCTION_PROXY_KEY, key));
+    }
+
+    /**
      * Enumeration, disable or enable cache in memory or on disk.
      */
     public enum HttpCache {
@@ -217,6 +228,20 @@ public class UrlRequestContextConfig {
     }
 
     /**
+     * Overrides Data Reduction Proxy configuration parameters with a comma-
+     * separated list that specifies the primary proxy name, the fallback
+     * proxy name, and a secure proxy check url. E.g:

[mmenke, 2015/04/01 15:46:14]

Secure proxy check?  Should also comment if they're all mandatory.  Also suggest
taking three separate strings.

[bengr, 2015/04/24 02:30:43]

Done.

+     * https://www.primary.com,https://www.fallback.com:80,http://check.com/
+     * @param dataReductionProxyParams
+     */
+    public UrlRequestContextConfig setDataReductionProxyOptions(
+            String dataReductionProxyParams) {
+        return putString(
+                UrlRequestContextConfigList.DATA_REDUCTION_PROXY_OPTIONS,
+                dataReductionProxyParams);
+    }
+
+    /**
      * Get JSON string representation of the config.
      */
     @Override