Disable download for overlay panel content

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 3afb1aab039d99d206c9b33af0d666dbd9d6c669..822c6cfac9340065a240969c5c3a9161cedf05c5 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -417,6 +417,7 @@ class CONTENT_EXPORT WebContentsImpl
   void StopMediaSession() override;
   void OnPasswordInputShownOnHttp() override;
   void OnCreditCardInputShownOnHttp() override;
+  void SetIsOverlayContent(bool is_overlay_content) override;
 
 #if defined(OS_ANDROID)
   base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents() override;
@@ -566,6 +567,7 @@ class CONTENT_EXPORT WebContentsImpl
   bool IsVirtualKeyboardRequested() override;
   bool IsOverridingUserAgent() override;
   bool IsJavaScriptDialogShowing() const override;
+  bool HideDownloadUI() const override;
 
   // NavigatorDelegate ---------------------------------------------------------
 
@@ -1430,6 +1432,9 @@ class CONTENT_EXPORT WebContentsImpl
   std::unique_ptr<service_manager::InterfaceProvider> java_interfaces_;
 #endif
 
+  // Whether this WebContents is for content overlay.
+  bool is_overlay_content_;
+
   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
   base::WeakPtrFactory<WebContentsImpl> weak_factory_;