[chromecast] Add is_main_frame attribute to webview nav event

Bug: internal b/141853741
Change-Id: Iaa5f5ac1a6fe46addd11d8f666c9cee4fa6b08f6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1845674
Commit-Queue: Ryan Daum <rdaum@chromium.org>
Reviewed-by: Daniel Nicoara <dnicoara@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703702}

chromecast/browser/webview/proto/webview.proto

@@ -171,6 +171,7 @@ message SetAutoMediaPlaybackPolicyRequest {
 
 message NavigationRequestEvent {
   string url = 1;
+  bool is_for_main_frame = 2;
 }
 
 enum NavigationDecision {

chromecast/browser/webview/webview_controller.cc

@@ -193,11 +193,13 @@ void WebviewController::ProcessRequest(const webview::WebviewRequest& request) {
 }
 
 void WebviewController::SendNavigationEvent(WebviewNavigationThrottle* throttle,
-                                            const GURL& gurl) {
+                                            const GURL& gurl,
+                                            bool is_in_main_frame) {
   DCHECK(!current_navigation_throttle_);
   std::unique_ptr<webview::WebviewResponse> response =
       std::make_unique<webview::WebviewResponse>();
   response->mutable_navigation_event()->set_url(gurl.spec());
+  response->mutable_navigation_event()->set_is_for_main_frame(is_in_main_frame);
   current_navigation_throttle_ = throttle;
   client_->EnqueueSend(std::move(response));
 }

chromecast/browser/webview/webview_controller.h

@@ -66,7 +66,8 @@ class WebviewController : public CastWebContents::Delegate,
   void AttachTo(aura::Window* window, int window_id);
 
   void SendNavigationEvent(WebviewNavigationThrottle* throttle,
-                           const GURL& url);
+                           const GURL& url,
+                           bool is_in_main_frame);
 
  private:
   webview::AsyncPageEvent_State current_state();

chromecast/browser/webview/webview_navigation_throttle.cc

@@ -16,13 +16,14 @@ WebviewNavigationThrottle::WebviewNavigationThrottle(
     WebviewController* controller)
     : NavigationThrottle(handle),
       url_(handle->GetURL()),
+      is_in_main_frame_(handle->IsInMainFrame()),
       controller_(controller) {}
 
 WebviewNavigationThrottle::~WebviewNavigationThrottle() = default;
 
 content::NavigationThrottle::ThrottleCheckResult
 WebviewNavigationThrottle::WillStartRequest() {
-  controller_->SendNavigationEvent(this, url_);
+  controller_->SendNavigationEvent(this, url_, is_in_main_frame_);
 
   return content::NavigationThrottle::DEFER;
 }

chromecast/browser/webview/webview_navigation_throttle.h

@@ -35,6 +35,7 @@ class WebviewNavigationThrottle : public content::NavigationThrottle {
   scoped_refptr<base::SequencedTaskRunner> response_task_runner_;
 
   const GURL url_;
+  bool is_in_main_frame_;
   WebviewController* controller_;
 
   DISALLOW_COPY_AND_ASSIGN(WebviewNavigationThrottle);