Implement Android WebView BlockNetworkImages

android_webview/renderer/aw_render_view_ext.cc

Index: android_webview/renderer/aw_render_view_ext.cc
diff --git a/android_webview/renderer/aw_render_view_ext.cc b/android_webview/renderer/aw_render_view_ext.cc
index ae0035dbe8c28010e170799ddae4f2b440739b38..7f0825cc1688b8fdbd85945e767e74454af4ae1a 100644
--- a/android_webview/renderer/aw_render_view_ext.cc
+++ b/android_webview/renderer/aw_render_view_ext.cc
@@ -5,17 +5,20 @@
 #include "android_webview/renderer/aw_render_view_ext.h"
 
 #include "android_webview/common/render_view_messages.h"
+#include "content/public/common/url_constants.h"
 #include "content/public/renderer/render_view.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebURL.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
 
 namespace android_webview {
 
 AwRenderViewExt::AwRenderViewExt(content::RenderView* render_view)
     : content::RenderViewObserver(render_view) {
+  render_view->GetWebView()->setPermissionClient(this);
 }
 
 AwRenderViewExt::~AwRenderViewExt() {}
@@ -48,4 +51,19 @@ void AwRenderViewExt::OnDocumentHasImagesRequest(int id) {
                                                    hasImages));
 }
 
+bool AwRenderViewExt::allowImage(WebKit::WebFrame* frame,
+                                 bool enabled_per_settings,
+                                 const WebKit::WebURL& image_url) {
+  // Implementing setBlockNetworkImages, so allow local scheme images to be
+  // loaded.
+  if (enabled_per_settings)
+    return true;
+
+  // For compatibility, only blacklist network schemes instead of whitelisting.
+  const GURL url(image_url);
+  return !(url.SchemeIs(chrome::kHttpScheme) ||
+           url.SchemeIs(chrome::kHttpsScheme) ||
+           url.SchemeIs(chrome::kFtpScheme));
+}
+
 }  // namespace android_webview