[PresentationAPI] Plumbing send(Blob) from PresentationSession IDL to platform/.

Source/modules/presentation/PresentationController.h

Index: Source/modules/presentation/PresentationController.h
diff --git a/Source/modules/presentation/PresentationController.h b/Source/modules/presentation/PresentationController.h
index 0b431e4011c6e2185eaec5ae6cb8ad6a58b30250..3b1ea1f74da7deefaba029a0500fc3c56a1f2261 100644
--- a/Source/modules/presentation/PresentationController.h
+++ b/Source/modules/presentation/PresentationController.h
@@ -58,12 +58,15 @@ public:
     // Called when the frame wants to join an existing presentation.
     void joinSession(const String& presentationUrl, const String& presentationId, WebPresentationSessionClientCallbacks*);
 
-    // Called when the frame wants to send String message to an existing presentation.
+    // Called when the frame wants to send String message to an existing presentation session.
     void send(const String& presentationUrl, const String& presentationId, const String& message);
 
-    // Called when the frame wants to send ArrayBuffer/View data to an existing presentation.
+    // Called when the frame wants to send ArrayBuffer/View data to an existing presentation session.
     void send(const String& presentationUrl, const String& presentationId, const uint8_t* data, size_t length);
 
+    // Called when the frame want to send Blob data to an existing presentation session.
+    void sendBlobData(const String& presentationUrl, const String& presentationId, const uint8_t* data, size_t length);
+
     // Called when the frame wants to close an existing presentation.
     void closeSession(const String& url, const String& presentationId);