<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 df8dfa26d6672cad9f829c07f434b0a404c77c88..f12e06f4b58cd5f7d99b2892a66aff54b3cccbc2 100644
--- a/content/browser/browser_plugin/browser_plugin_embedder_helper.cc
+++ b/content/browser/browser_plugin/browser_plugin_embedder_helper.cc
@@ -56,6 +56,8 @@ bool BrowserPluginEmbedderHelper::OnMessageReceived(
     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_SetAutoSize, OnSetAutoSize)
     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_PluginAtPositionResponse,
                         OnPluginAtPositionResponse)
+    IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_AllowMediaAccess,
+                        OnAllowMediaAccess)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ -185,4 +187,10 @@ 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