Remove chrome_download_delegate.cc

We no longer need this file.
The java side is still being used for intercepting context menu downloads.

Review-Url: https://codereview.chromium.org/2886403005
Cr-Commit-Position: refs/heads/master@{#473010}

Author: qinmin

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

@@ -22,7 +22,6 @@
 import org.chromium.chrome.browser.UrlConstants;
 import org.chromium.chrome.browser.tab.EmptyTabObserver;
 import org.chromium.chrome.browser.tab.Tab;
-import org.chromium.content_public.browser.WebContents;
 import org.chromium.ui.base.WindowAndroid;
 import org.chromium.ui.base.WindowAndroid.PermissionCallback;
 
@@ -58,8 +57,6 @@ public void onDestroyed(Tab tab) {
                 mTab = null;
             }
         });
-
-        nativeInit(tab.getWebContents());
     }
 
     /**
@@ -312,7 +309,4 @@ public void onRequestPermissionsResult(
     protected Context getContext() {
         return mContext;
     }
-
-    private native void nativeInit(WebContents webContents);
-    private static native String nativeGetDownloadWarningText(String filename);
 }

chrome/browser/BUILD.gn

@@ -2858,8 +2858,6 @@ split_static_library("browser") {
       "android/document/document_web_contents_delegate.h",
       "android/dom_distiller/distiller_ui_handle_android.cc",
       "android/dom_distiller/distiller_ui_handle_android.h",
-      "android/download/chrome_download_delegate.cc",
-      "android/download/chrome_download_delegate.h",
       "android/download/chrome_duplicate_download_infobar_delegate.cc",
       "android/download/chrome_duplicate_download_infobar_delegate.h",
       "android/download/dangerous_download_infobar_delegate.cc",

chrome/browser/android/chrome_jni_registrar.cc

@@ -44,7 +44,6 @@
 #include "chrome/browser/android/devtools_server.h"
 #include "chrome/browser/android/document/document_web_contents_delegate.h"
 #include "chrome/browser/android/dom_distiller/distiller_ui_handle_android.h"
-#include "chrome/browser/android/download/chrome_download_delegate.h"
 #include "chrome/browser/android/download/download_controller.h"
 #include "chrome/browser/android/download/download_manager_service.h"
 #include "chrome/browser/android/download/items/offline_content_aggregator_factory_android.h"
@@ -223,7 +222,6 @@ static base::android::RegistrationMethod kChromeRegisteredMethods[] = {
     {"DomDistillerContent",
      dom_distiller::content::android::RegisterDomDistiller},
     {"DomDistillerCore", dom_distiller::core::android::RegisterDomDistiller},
-    {"ChromeDownloadDelegate", RegisterChromeDownloadDelegate},
     {"GCMDriver", gcm::android::RegisterGCMDriverJni},
     {"InstanceID", instance_id::android::RegisterInstanceIDJni},
     {"Invalidation", invalidation::android::RegisterInvalidationJni},

chrome/browser/android/download/chrome_download_delegate.cc

@@ -14,7 +14,6 @@
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/synchronization/lock.h"
-#include "chrome/browser/android/download/chrome_download_delegate.h"
 #include "chrome/browser/android/download/dangerous_download_infobar_delegate.h"
 #include "chrome/browser/android/download/download_manager_service.h"
 #include "chrome/browser/android/tab_android.h"