[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 c6e6c2cb4a8151fe21c3245cc569425c62e25437..7817e3d835bad9a6be5456a097226fcb60c092d2 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 mBypassCache = false;
 
     /*
      * Synchronize access to mUrlRequestAdapter, mStarted, mCanceled and
@@ -270,6 +271,9 @@ final class CronetUrlRequest implements UrlRequest {
                             + header.first + "=" + header.second);
                 }
             }
+            if (mBypassCache) {
+                nativeBypassCache(mUrlRequestAdapter);
+            }
             mStarted = true;
             nativeStart(mUrlRequestAdapter);
         }
@@ -312,6 +316,12 @@ final class CronetUrlRequest implements UrlRequest {
         throw new UnsupportedOperationException("Not implemented yet");
     }
 
+    @Override
+    public void bypassCache() {
+        checkNotStarted();
+        mBypassCache = true;

[mef, 2015/02/04 20:39:42]

why can't we just call nativeBypassCache here?

[xunjieli, 2015/02/04 21:27:05]

Cronet's UrlRequestAdapter is only created in start(), so we can't call
nativeBypassCache() here.

+    }
+
     /**
      * Post task to application Executor. Used for Listener callbacks
      * and other tasks that should not be executed on network thread.
@@ -610,4 +620,6 @@ final class CronetUrlRequest implements UrlRequest {
     private native boolean nativeGetWasCached(long urlRequestAdapter);
 
     private native long nativeGetTotalReceivedBytes(long urlRequestAdapter);
+
+    private native void nativeBypassCache(long urlRequestAdapter);
 }