SetUploadData now throws an exception if contentType is null.

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

Index: components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequest.java
diff --git a/components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequest.java b/components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequest.java
index d067cf6559a912cf037252112008ddf399ca80b8..ed448f2571c11bd8f5b0ca07db29f160f7ece931 100644
--- a/components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequest.java
+++ b/components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequest.java
@@ -214,6 +214,7 @@ public class ChromiumUrlRequest implements HttpUrlRequest {
     public void setUploadData(String contentType, byte[] data) {
         synchronized (mLock) {
             validateNotStarted();
+            validateContentType(contentType);
             mUploadContentType = contentType;
             mUploadData = data;
             mUploadChannel = null;
@@ -234,6 +235,7 @@ public class ChromiumUrlRequest implements HttpUrlRequest {
             ReadableByteChannel channel, long contentLength) {
         synchronized (mLock) {
             validateNotStarted();
+            validateContentType(contentType);
             mUploadContentType = contentType;
             mUploadChannel = channel;
             mUploadContentLength = contentLength;
@@ -252,6 +254,7 @@ public class ChromiumUrlRequest implements HttpUrlRequest {
     public void setChunkedUpload(String contentType) {
         synchronized (mLock) {
             validateNotStarted();
+            validateContentType(contentType);
             mUploadContentType = contentType;
             mChunkedUpload = true;
             mUploadData = null;
@@ -455,6 +458,12 @@ public class ChromiumUrlRequest implements HttpUrlRequest {
         }
     }
 
+    private void validateContentType(String contentType) {
+        if (contentType == null) {
+            throw new NullPointerException("contentType is required");
+        }
+    }
+
     // Private methods called by native library.
 
     /**