Convert PageLoadMetrics to Mojo

mojo/public/cpp/bindings/lib/interface_ptr_state.h

Index: mojo/public/cpp/bindings/lib/interface_ptr_state.h
diff --git a/mojo/public/cpp/bindings/lib/interface_ptr_state.h b/mojo/public/cpp/bindings/lib/interface_ptr_state.h
index 584933ebc91b417c96c1cbdaf3e532819f8067ca..215e9001e6e224037bf82abcc98fbc4378c4e538 100644
--- a/mojo/public/cpp/bindings/lib/interface_ptr_state.h
+++ b/mojo/public/cpp/bindings/lib/interface_ptr_state.h
@@ -93,13 +93,8 @@ class InterfacePtrState<Interface, false> {
     swap(other->version_, version_);
   }
 
-  void Bind(InterfacePtrInfo<Interface> info,
-            scoped_refptr<base::SingleThreadTaskRunner> runner) {
-    DCHECK(!proxy_);
-    DCHECK(!router_);
-    DCHECK(!handle_.is_valid());
-    DCHECK_EQ(0u, version_);
-    DCHECK(info.is_valid());
+  bool WaitForIncomingResponse() override {
+    ConfigureProxyIfNecessary();
 
     handle_ = info.PassHandle();
     version_ = info.version();
@@ -258,6 +253,13 @@ class InterfacePtrState<Interface, true> {
     return router_ ? router_->HasAssociatedEndpoints() : false;
   }
 
+  bool WaitForIncomingResponse() {
+    ConfigureProxyIfNecessary();
+
+    DCHECK(router_);
+    return router_->WaitForIncomingMessage(MOJO_DEADLINE_INDEFINITE);
+  }
+
   // After this method is called, the object is in an invalid state and
   // shouldn't be reused.
   InterfacePtrInfo<Interface> PassInterface() {