Fix an issue that android Download Manager doesn't handle OMA files correctly

For OMA files, it looks like that android download manager cannot correctly download it.
Some of the files cannot be downloaded, and some of the files downloaded has different binary content as the ones downloaed on chrome desktop.
Bypass android download manager for OMA mime types.

BUG=382698

Review URL: https://codereview.chromium.org/331143010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282243 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/android/intercept_download_resource_throttle.cc

@@ -13,6 +13,9 @@
 
 namespace chrome {
 
+static const char kOmaDrmContentMime[]  = "application/vnd.oma.drm.content";
+static const char kOmaDrmMessageMime[]  = "application/vnd.oma.drm.message";
+
 InterceptDownloadResourceThrottle::InterceptDownloadResourceThrottle(
     net::URLRequest* request,
     int render_process_id,
@@ -40,6 +43,13 @@ const char* InterceptDownloadResourceThrottle::GetNameForLogging() const {
 }
 
 void InterceptDownloadResourceThrottle::ProcessDownloadRequest() {
+  if (request_->url_chain().empty())
+    return;
+
+  GURL url = request_->url_chain().back();
+  if (!url.SchemeIsHTTPOrHTTPS())
+    return;
+
   if (request_->method() != net::HttpRequestHeaders::kGetMethod)
     return;
 
@@ -62,11 +72,11 @@ void InterceptDownloadResourceThrottle::ProcessDownloadRequest() {
 #endif
   }
 
-  if (request_->url_chain().empty())
-    return;
-
-  GURL url = request_->url_chain().back();
-  if (!url.SchemeIsHTTPOrHTTPS())
+  // For OMA DRM downloads, Android Download Manager doesn't handle them
+  // correctly. Use chromium network stack instead. http://crbug.com/382698.
+  std::string mime;
+  const_cast<net::URLRequest*>(request_)->GetMimeType(&mime);
+  if (!mime.compare(kOmaDrmContentMime) || !mime.compare(kOmaDrmMessageMime))
     return;
 
   content::DownloadControllerAndroid::Get()->CreateGETDownload(