Reland of Add a NavigationThrottle to the public content/ interface

android_webview/browser/aw_content_browser_client.cc

Index: android_webview/browser/aw_content_browser_client.cc
diff --git a/android_webview/browser/aw_content_browser_client.cc b/android_webview/browser/aw_content_browser_client.cc
index 759c844b9ba903e6e713e0a2af56b669c2867384..ab14d49bdbb54982b24b77775a5836cb166107bd 100644
--- a/android_webview/browser/aw_content_browser_client.cc
+++ b/android_webview/browser/aw_content_browser_client.cc
@@ -25,10 +25,13 @@
 #include "base/command_line.h"
 #include "base/path_service.h"
 #include "components/cdm/browser/cdm_message_filter_android.h"
+#include "components/navigation_interception/intercept_navigation_delegate.h"
 #include "content/public/browser/access_token_store.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/client_certificate_delegate.h"
+#include "content/public/browser/navigation_handle.h"
+#include "content/public/browser/navigation_throttle.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
@@ -487,6 +490,22 @@
       content::WebContents::FromRenderViewHost(rvh), web_prefs);
 }
 
+ScopedVector<content::NavigationThrottle>
+AwContentBrowserClient::CreateThrottlesForNavigation(
+    content::NavigationHandle* navigation_handle) {
+  ScopedVector<content::NavigationThrottle> throttles;
+  if (navigation_handle->IsInMainFrame() ||
+      (!navigation_handle->GetURL().SchemeIs(url::kHttpScheme) &&
+       !navigation_handle->GetURL().SchemeIs(url::kHttpsScheme) &&
+       !navigation_handle->GetURL().SchemeIs(url::kAboutScheme))) {
+    throttles.push_back(
+        navigation_interception::InterceptNavigationDelegate::CreateThrottleFor(
+            navigation_handle)
+            .Pass());
+  }
+  return throttles.Pass();
+}
+
 #if defined(VIDEO_HOLE)
 content::ExternalVideoSurfaceContainer*
 AwContentBrowserClient::OverrideCreateExternalVideoSurfaceContainer(