Add a flag to not start GPU process on browser startup

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

Index: chrome/android/java/src/org/chromium/chrome/browser/download/DownloadNotificationService.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadNotificationService.java b/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadNotificationService.java
index 1b3cf5d089d427025c6046d7fe2c93bc2c6aa4ae..c763c2356eaba44d9995c6f21df189241ab8abd6 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadNotificationService.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/download/DownloadNotificationService.java
@@ -320,6 +320,11 @@ public class DownloadNotificationService extends Service {
                 entry == null ? false : entry.canDownloadWhileMetered;
         BrowserParts parts = new EmptyBrowserParts() {
             @Override
+            public boolean shouldStartGpuProcess() {
+                return false;
+            }
+
+            @Override
             public void finishNativeInitialization() {
                 DownloadManagerService service =
                         DownloadManagerService.getDownloadManagerService(getApplicationContext());