Fix an issue that opening a download with remapped MIME type will launch an intent

chrome/android/java/src/org/chromium/chrome/browser/download/DownloadManagerService.java

Index: chrome/android/java/src/org/chromium/chrome/browser/download/DownloadManagerService.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadManagerService.java b/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadManagerService.java
index 8a6c207784fa9ae4add20b26bfe481101b279138..a9a9670c2cf584c06bf5a273733e6da1037c7adc 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadManagerService.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadManagerService.java
@@ -1149,12 +1149,14 @@ public class DownloadManagerService extends BroadcastReceiver implements
      * Checks whether the download can be opened by the browser.
      * @param downloadGuid GUID of the download.
      * @param isOffTheRecord Whether the download is off the record.
+     * @param mimeType MIME type of the file.
      * @return Whether the download is openable by the browser.
      */
     @Override
-    public boolean isDownloadOpenableInBrowser(String downloadGuid, boolean isOffTheRecord) {
-        return nativeIsDownloadOpenableInBrowser(
-                getNativeDownloadManagerService(), downloadGuid, isOffTheRecord);
+    public boolean isDownloadOpenableInBrowser(
+            String downloadGuid, boolean isOffTheRecord, String mimeType) {
+        // TODO(qinmin): for audio and video, check if the codec is supported by Chrome.
+        return isSupportedMimeType(mimeType);
     }
 
     /**
@@ -1658,8 +1660,6 @@ public class DownloadManagerService extends BroadcastReceiver implements
             boolean isOffTheRecord);
     private native void nativeRemoveDownload(long nativeDownloadManagerService, String downloadGuid,
             boolean isOffTheRecord);
-    private native boolean nativeIsDownloadOpenableInBrowser(
-            long nativeDownloadManagerService, String downloadGuid, boolean isOffTheRecord);
     private native void nativeGetAllDownloads(
             long nativeDownloadManagerService, boolean isOffTheRecord);
     private native void nativeCheckForExternallyRemovedDownloads(