<webview>: First stab at implementing media permission request for guests.

content/browser/browser_plugin/browser_plugin_embedder_helper.cc

Index: content/browser/browser_plugin/browser_plugin_embedder_helper.cc
diff --git a/content/browser/browser_plugin/browser_plugin_embedder_helper.cc b/content/browser/browser_plugin/browser_plugin_embedder_helper.cc
index 90e04e829317e29b4787bdc21b2e298376c51e31..524b0728936c1be20777181fdb4225de04a0aceb 100644
--- a/content/browser/browser_plugin/browser_plugin_embedder_helper.cc
+++ b/content/browser/browser_plugin/browser_plugin_embedder_helper.cc
@@ -58,6 +58,8 @@ bool BrowserPluginEmbedderHelper::OnMessageReceived(
                         OnPluginAtPositionResponse)
     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_BuffersSwappedACK,
                         OnSwapBuffersACK)
+    IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_AllowMediaAccess,
+                        OnAllowMediaAccess)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ -191,4 +193,10 @@ void BrowserPluginEmbedderHelper::OnSetAutoSize(
   embedder_->SetAutoSize(instance_id, auto_size_params, resize_guest_params);
 }
 
+void BrowserPluginEmbedderHelper::OnAllowMediaAccess(int instance_id,
+                                                     int request_id,
+                                                     bool allow) {
+  embedder_->AllowMediaAccess(instance_id, request_id, allow);
+}
+
 }  // namespace content