Upstream changes to enable chunked uploads.

components/cronet/android/url_request_adapter.h

Index: components/cronet/android/url_request_adapter.h
diff --git a/components/cronet/android/url_request_adapter.h b/components/cronet/android/url_request_adapter.h
index 482f175f626527975157ff9f2736fde8f475030d..89c034503f9a7429ba3bcd0709db7f017038f4a5 100644
--- a/components/cronet/android/url_request_adapter.h
+++ b/components/cronet/android/url_request_adapter.h
@@ -38,6 +38,7 @@ class URLRequestAdapter : public net::URLRequest::Delegate {
     virtual void OnBytesRead(URLRequestAdapter* request) = 0;
     virtual void OnRequestFinished(URLRequestAdapter* request) = 0;
     virtual int ReadFromUploadChannel(net::IOBuffer* buf, int buf_length) = 0;
+    virtual void OnAppendChunkCompleted(URLRequestAdapter* request) = 0;
 
    protected:
     friend class base::RefCountedThreadSafe<URLRequestAdapterDelegate>;
@@ -62,6 +63,16 @@ class URLRequestAdapter : public net::URLRequest::Delegate {
   // Sets the request to streaming upload.
   void SetUploadChannel(JNIEnv* env, int64 content_length);
 
+  // Indicates that the request body will be streamed by calling
+  // AppendChunkToUpload() repeatedly. This must be called before Start().
+  void EnableChunkedUpload();
+
+  // Appends a chunk to the upload.
+  // This must be called after EnableChunkedUpload() and Start().
+  void AppendChunkToUpload(const char* bytes,
+                           int bytes_len,
+                           bool is_last_chunk);
+
   // Starts the request.
   void Start();
 
@@ -136,6 +147,7 @@ class URLRequestAdapter : public net::URLRequest::Delegate {
   std::string content_type_;
   bool canceled_;
   int64 expected_size_;
+  bool chunked_upload_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestAdapter);
 };