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

chrome/browser/android/intercept_download_resource_throttle.cc

Index: chrome/browser/android/intercept_download_resource_throttle.cc
diff --git a/chrome/browser/android/intercept_download_resource_throttle.cc b/chrome/browser/android/intercept_download_resource_throttle.cc
index 689306f046fd803745bddca6fde22fbf9644ea2c..819644092ffacfd48bd8f401ca213ebfe12e18c9 100644
--- a/chrome/browser/android/intercept_download_resource_throttle.cc
+++ b/chrome/browser/android/intercept_download_resource_throttle.cc
@@ -12,6 +12,9 @@
 
 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,
@@ -39,6 +42,13 @@ 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;
 
@@ -61,11 +71,11 @@ 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(