<webview>: Implement support for package-local chrome-extension:// URLs

chrome/browser/extensions/extension_protocols.cc

Index: chrome/browser/extensions/extension_protocols.cc
diff --git a/chrome/browser/extensions/extension_protocols.cc b/chrome/browser/extensions/extension_protocols.cc
index eb247ab74566558bcac840a1845cdede3191d7ee..68b9238e40197c7e10f8000cbdc1d562414de42c 100644
--- a/chrome/browser/extensions/extension_protocols.cc
+++ b/chrome/browser/extensions/extension_protocols.cc
@@ -24,6 +24,7 @@
 #include "base/threading/thread_restrictions.h"
 #include "build/build_config.h"
 #include "chrome/browser/extensions/extension_info_map.h"
+#include "chrome/browser/extensions/extension_renderer_state.h"
 #include "chrome/browser/extensions/image_loader.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/background_info.h"
@@ -35,6 +36,7 @@
 #include "chrome/common/extensions/manifest_handlers/shared_module_info.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
 #include "chrome/common/extensions/web_accessible_resources_handler.h"
+#include "chrome/common/extensions/webview_handler.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/resource_request_info.h"
@@ -345,11 +347,6 @@ bool AllowExtensionResourceLoad(net::URLRequest* request,
     return true;
   }
 
-  if (is_incognito && !ExtensionCanLoadInIncognito(info, request->url().host(),
-                                                   extension_info_map)) {
-    return false;
-  }
-
   // The following checks are meant to replicate similar set of checks in the
   // renderer process, performed by ResourceRequestPolicy::CanRequestResource.
   // These are not exactly equivalent, because we don't have the same bits of
@@ -368,6 +365,21 @@ bool AllowExtensionResourceLoad(net::URLRequest* request,
     return true;
   }
 
+  // Extensions with webview: allow loading certain resources by guest renderers
+  // with privileged partition IDs as specified in the manifest file.
+  ExtensionRendererState* renderer_state =
+      ExtensionRendererState::GetInstance();
+  ExtensionRendererState::WebViewInfo webview_info;
+  bool is_guest = renderer_state->GetWebViewInfo(info->GetChildID(),
+                                                 info->GetRouteID(),
+                                                 &webview_info);
+  std::string resource_path = request->url().path();
+  if (is_guest &&
+      extensions::WebviewInfo::IsResourceWebviewAccessible(
+            extension, webview_info.partition_id, resource_path)) {
+    return true;
+  }
+
   if (!content::PageTransitionIsWebTriggerable(info->GetPageTransition()))
     return false;
 
@@ -402,6 +414,12 @@ bool AllowExtensionResourceLoad(net::URLRequest* request,
     return true;
   }
 
+  if (is_incognito && !ExtensionCanLoadInIncognito(info, request->url().host(),
+                                                   extension_info_map)) {
+    return false;
+  }
+
+
   // If there aren't any explicitly marked web accessible resources, the
   // load should be allowed only if it is by DevTools. A close approximation is
   // checking if the extension contains a DevTools page.