[Cronet] Allow UrlRequest bypass cache

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

Index: components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.java
diff --git a/components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.java b/components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.java
index 835bb28681591c837db0690fc39475741a1d708a..1a085b85b9c2565b6c6c885a1d71e8ba0c36eeb2 100644
--- a/components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.java
+++ b/components/cronet/android/java/src/org/chromium/net/CronetUrlRequest.java
@@ -34,6 +34,7 @@ final class CronetUrlRequest implements UrlRequest {
     private boolean mStarted = false;
     private boolean mCanceled = false;
     private boolean mInOnDataReceived = false;
+    private boolean mDisableCache = false;
 
     /*
      * Synchronize access to mUrlRequestAdapter, mStarted, mCanceled and
@@ -280,6 +281,9 @@ final class CronetUrlRequest implements UrlRequest {
                             + header.first + "=" + header.second);
                 }
             }
+            if (mDisableCache) {
+                nativeDisableCache(mUrlRequestAdapter);
+            }
             mStarted = true;
             nativeStart(mUrlRequestAdapter);
         }
@@ -322,6 +326,12 @@ final class CronetUrlRequest implements UrlRequest {
         throw new UnsupportedOperationException("Not implemented yet");
     }
 
+    @Override
+    public void disableCache() {
+        checkNotStarted();
+        mDisableCache = true;
+    }
+
     /**
      * Post task to application Executor. Used for Listener callbacks
      * and other tasks that should not be executed on network thread.
@@ -620,4 +630,6 @@ final class CronetUrlRequest implements UrlRequest {
     private native boolean nativeGetWasCached(long urlRequestAdapter);
 
     private native long nativeGetTotalReceivedBytes(long urlRequestAdapter);
+
+    private native void nativeDisableCache(long urlRequestAdapter);
 }