On title and favicon change event on webview:

-titlechange
-faviconchange

extensions/browser/extension_event_histogram_value.h

@@ -426,6 +426,8 @@ enum HistogramValue {
   WEB_VIEW_INTERNAL_ON_SSL_CHANGE,
   WEB_VIEW_INTERNAL_ON_CERTIFICATE_ERROR,
   WEB_VIEW_INTERNAL_ON_SUBFRAME_CERTIFICATE_ERROR,
+  WEB_VIEW_INTERNAL_ON_TITLE_CHANGE,
+  WEB_VIEW_INTERNAL_ON_FAVICON_CHANGE,
   // Last entry: Add new entries above, then run:
   // python tools/metrics/histograms/update_extension_histograms.py
   ENUM_BOUNDARY

extensions/browser/guest_view/guest_view_events.cc

@@ -86,6 +86,8 @@ class EventMap {
          events::WEB_VIEW_INTERNAL_ON_ERROR_OCCURRED},
         {webview::kEventSendHeaders, events::WEB_VIEW_INTERNAL_ON_SEND_HEADERS},
         {webview::kEventSSLChange, events::WEB_VIEW_INTERNAL_ON_SSL_CHANGE},
+        {webview::kEventFaviconChange, events::WEB_VIEW_INTERNAL_ON_FAVICON_CHANGE},
+        {webview::kEventTitleChange, events::WEB_VIEW_INTERNAL_ON_TITLE_CHANGE},
     };
     for (const auto& name_and_value : names_and_values) {
       values_[name_and_value.name] = name_and_value.value;

extensions/browser/guest_view/web_view/web_view_constants.cc

@@ -33,6 +33,7 @@ const char kEventDialog[] = "webViewInternal.onDialog";
 const char kEventDropLink[] = "webViewInternal.onDropLink";
 const char kEventExit[] = "webViewInternal.onExit";
 const char kEventExitFullscreen[] = "webViewInternal.onExitFullscreen";
+const char kEventFaviconChange[] = "webViewInternal.onFaviconChange";
 const char kEventFindReply[] = "webViewInternal.onFindReply";
 const char kEventFrameNameChanged[] = "webViewInternal.onFrameNameChanged";
 const char kEventHeadersReceived[] = "webViewInternal.onHeadersReceived";
@@ -50,6 +51,7 @@ const char kEventResponsive[] = "webViewInternal.onResponsive";
 const char kEventSizeChanged[] = "webViewInternal.onSizeChanged";
 const char kEventSSLChange[] = "webViewInternal.onSSLChange";
 const char kEventSubFrameCertificateError[] = "webViewInternal.onSubFrameCertificateError";
+const char kEventTitleChange[] = "webViewInternal.onTitleChange";
 const char kEventUnresponsive[] = "webViewInternal.onUnresponsive";
 const char kEventZoomChange[] = "webViewInternal.onZoomChange";
 
@@ -69,6 +71,7 @@ const char kWebViewEventPrefix[] = "webViewInternal.";
 const char kCertificate[] = "certificate";
 const char kContextMenuItems[] = "items";
 const char kDefaultPromptText[] = "defaultPromptText";
+const char kFaviconUrl[] = "faviconUrl";
 const char kFindSearchText[] = "searchText";
 const char kFindFinalUpdate[] = "finalUpdate";
 const char kInitialHeight[] = "initialHeight";
@@ -104,6 +107,7 @@ const char kRequestId[] = "requestId";
 const char kRequestInfo[] = "requestInfo";
 const char kSourceId[] = "sourceId";
 const char kTargetURL[] = "targetUrl";
+const char kTitle[] = "title";
 const char kWindowID[] = "windowId";
 const char kWindowOpenDisposition[] = "windowOpenDisposition";
 const char kOldZoomFactor[] = "oldZoomFactor";

extensions/browser/guest_view/web_view/web_view_constants.h

@@ -39,6 +39,7 @@ extern const char kEventDialog[];
 extern const char kEventDropLink[];
 extern const char kEventExit[];
 extern const char kEventExitFullscreen[];
+extern const char kEventFaviconChange[];
 extern const char kEventFindReply[];
 extern const char kEventFrameNameChanged[];
 extern const char kEventHeadersReceived[];
@@ -56,6 +57,7 @@ extern const char kEventResponsive[];
 extern const char kEventSizeChanged[];
 extern const char kEventSSLChange[];
 extern const char kEventSubFrameCertificateError[];
+extern const char kEventTitleChange[];
 extern const char kEventUnresponsive[];
 extern const char kEventZoomChange[];
 
@@ -75,6 +77,7 @@ extern const char kWebViewEventPrefix[];
 extern const char kCertificate[];
 extern const char kContextMenuItems[];
 extern const char kDefaultPromptText[];
+extern const char kFaviconUrl[];
 extern const char kFindSearchText[];
 extern const char kFindFinalUpdate[];
 extern const char kInitialHeight[];
@@ -110,6 +113,7 @@ extern const char kRequestId[];
 extern const char kRequestInfo[];
 extern const char kSourceId[];
 extern const char kTargetURL[];
+extern const char kTitle[];
 extern const char kWindowID[];
 extern const char kWindowOpenDisposition[];
 extern const char kOldZoomFactor[];

extensions/browser/guest_view/web_view/web_view_guest.cc

@@ -43,6 +43,7 @@
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
+#include "content/public/common/favicon_url.h"
 #include "content/public/common/media_stream_request.h"
 #include "content/public/common/page_zoom.h"
 #include "content/public/common/result_codes.h"
@@ -874,6 +875,10 @@ void WebViewGuest::DidCommitProvisionalLoadForFrame(
     dict->SetString("favicon", web_contents()->GetController().GetEntryAtIndex(i)->GetFavicon().url.spec());
     history->Append(dict);
   }
+
+  FaviconEvent(web_contents()->GetController().GetEntryAtIndex(web_contents()->GetController().GetCurrentEntryIndex())->GetFavicon().url.spec());
+  TitleWasSet(web_contents()->GetController().GetEntryAtIndex(web_contents()->GetController().GetCurrentEntryIndex()), true);
+
   args->Set("pagesHistory", history);
   args->SetInteger(webview::kInternalProcessId,
                    web_contents()->GetRenderProcessHost()->GetID());
@@ -1483,6 +1488,28 @@ void WebViewGuest::VisibleSSLStateChanged(const content::WebContents* source) {
     webview::kEventSSLChange, std::move(args)));
 }
 
+void WebViewGuest::FaviconEvent(const std::string& faviconUrl)
+{
+  std::unique_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetString(webview::kFaviconUrl, faviconUrl);
+  DispatchEventToView(base::MakeUnique<GuestViewEvent>(webview::kEventFaviconChange,
+    std::move(args)));
+}
+
+void WebViewGuest::DidUpdateFaviconURL(const std::vector<content::FaviconURL>& candidates) {
+  if (!candidates.empty())
+    FaviconEvent(candidates[0].icon_url.spec());
+  else
+    FaviconEvent("");
+}
+
+void WebViewGuest::TitleWasSet(content::NavigationEntry* entry, bool explicit_set) {
+  std::unique_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetString(webview::kTitle, entry->GetTitleForDisplay());
+  DispatchEventToView(base::MakeUnique<GuestViewEvent>(webview::kEventTitleChange,
+    std::move(args)));
+}
+
 void WebViewGuest::LoadURLWithParams(
     const GURL& url,
     const content::Referrer& referrer,
@@ -1510,7 +1537,7 @@ void WebViewGuest::LoadURLWithParams(
       scheme_is_blocked = false;
     }
   }
-    
+
   // Do not allow navigating a guest to schemes other than known safe schemes.
   // This will block the embedder trying to load unwanted schemes, e.g.
   // chrome://.

extensions/browser/guest_view/web_view/web_view_guest.h

@@ -30,6 +30,11 @@ namespace content {
 struct GlobalRequestID;
 }  // namespace content
 
+namespace content {
+class NavigationEntry;
+struct FaviconURL;
+}
+
 namespace extensions {
 
 class WebViewInternalFindFunction;
@@ -260,6 +265,10 @@ class WebViewGuest : public guest_view::GuestView<WebViewGuest>,
   void OnCertificateError(base::ListValue* certificate) final;
   void OnSubFrameCertificateError(base::ListValue* certificate) final;
 
+  void FaviconEvent(const std::string& faviconUrl);
+  void DidUpdateFaviconURL(const std::vector<content::FaviconURL>& candidates) final;
+  void TitleWasSet(content::NavigationEntry* entry, bool explicit_set) final;
+
   // WebContentsObserver implementation.
   void DidCommitProvisionalLoadForFrame(
       content::RenderFrameHost* render_frame_host,

extensions/renderer/resources/guest_view/web_view/web_view_events.js

@@ -66,6 +66,10 @@ WebViewEvents.EVENTS = {
     handler: 'handleFullscreenExitEvent',
     internal: true
   },
+  'faviconchange': {
+    evt: CreateEvent('webViewInternal.onFaviconChange'),
+    fields: ['faviconUrl']
+  },
   'findupdate': {
     evt: CreateEvent('webViewInternal.onFindReply'),
     fields: [
@@ -151,6 +155,10 @@ WebViewEvents.EVENTS = {
     evt: CreateEvent('webViewInternal.onSubFrameCertificateError'),
     fields: ['certificate']
   },
+  'titlechange': {
+      evt: CreateEvent('webViewInternal.onTitleChange'),
+      fields: ['title']
+  },
   'unresponsive': {
     evt: CreateEvent('webViewInternal.onUnresponsive'),
     fields: ['processId']