1 files changed, 25 insertions, 4 deletions
diff --git a/Source/WebCore/html/HTMLMediaElement.cpp b/Source/WebCore/html/HTMLMediaElement.cpp
index ebeee1b40..753242110 100644
--- a/Source/WebCore/html/HTMLMediaElement.cpp
+++ b/Source/WebCore/html/HTMLMediaElement.cpp
@@ -1516,6 +1516,29 @@ void HTMLMediaElement::mediaPlayerNetworkStateChanged(MediaPlayer*)
     endProcessingMediaPlayerCallback();
 }
 
+static void logMediaLoadRequest(Page* page, const String& mediaEngine, const String& errorMessage, bool succeeded)
+{
+    if (!page || !page->settings()->diagnosticLoggingEnabled())
+        return;
+
+    ChromeClient* client = page->chrome()->client();
+
+    if (!succeeded) {
+        client->logDiagnosticMessage(DiagnosticLoggingKeys::mediaLoadingFailedKey(), errorMessage, DiagnosticLoggingKeys::failKey());
+        return;
+    }
+
+    client->logDiagnosticMessage(DiagnosticLoggingKeys::mediaLoadedKey(), mediaEngine, DiagnosticLoggingKeys::noopKey());
+
+    if (!page->hasSeenAnyMediaEngine())
+        client->logDiagnosticMessage(DiagnosticLoggingKeys::pageContainsAtLeastOneMediaEngineKey(), emptyString(), DiagnosticLoggingKeys::noopKey());
+
+    if (!page->hasSeenMediaEngine(mediaEngine))
+        client->logDiagnosticMessage(DiagnosticLoggingKeys::pageContainsMediaEngineKey(), mediaEngine, DiagnosticLoggingKeys::noopKey());
+
+    page->sawMediaEngine(mediaEngine);
+}
+
 static String stringForNetworkState(MediaPlayer::NetworkState state)
 {
     switch (state) {
@@ -1567,8 +1590,7 @@ void HTMLMediaElement::mediaLoadingFailed(MediaPlayer::NetworkState error)
         mediaControls()->reportedError();
     }
 
-    if (document()->page() && document()->page()->settings()->diagnosticLoggingEnabled())
-        document()->page()->chrome()->client()->logDiagnosticMessage(DiagnosticLoggingKeys::mediaLoadingFailedKey(), stringForNetworkState(error), DiagnosticLoggingKeys::failKey());
+    logMediaLoadRequest(document()->page(), String(), stringForNetworkState(error), false);
 }
 
 void HTMLMediaElement::setNetworkState(MediaPlayer::NetworkState state)
@@ -1698,8 +1720,7 @@ void HTMLMediaElement::setReadyState(MediaPlayer::ReadyState state)
         if (renderer())
             renderer()->updateFromElement();
 
-        if (document()->page() && document()->page()->settings()->diagnosticLoggingEnabled())
-            document()->page()->chrome()->client()->logDiagnosticMessage(DiagnosticLoggingKeys::mediaLoadedKey(), m_player->engineDescription(), DiagnosticLoggingKeys::noopKey());
+        logMediaLoadRequest(document()->page(), m_player->engineDescription(), String(), true);
     }
 
     bool shouldUpdateDisplayState = false;