[Autofill] Migrate ChromePasswordManagerClient<-->PasswordGenerationAgent IPCs to mojo.

content/public/common/associated_interface_provider.h

Index: content/public/common/associated_interface_provider.h
diff --git a/content/public/common/associated_interface_provider.h b/content/public/common/associated_interface_provider.h
index f1c495b1a0fbe8cfb278cdeb40a1452cbcfa0a9b..121d18ce0fbe5093d7222f762f4c11451408d5d3 100644
--- a/content/public/common/associated_interface_provider.h
+++ b/content/public/common/associated_interface_provider.h
@@ -31,6 +31,25 @@ namespace content {
 // which hosts its corresponding RenderFrame.
 class AssociatedInterfaceProvider {
  public:
+  class TestApi {

[Ken Rockot(use gerrit already), 2016/09/20 18:26:20]

I don't think we need to emulate what's done in InterfaceRegistry. And there's
no use of ClearBinders() in this CL anyway.

Can you just add a public OverrideBinderForTesting(name, callback) method on
AssociatedInterfaceProvider/Impl?

[leonhsl(Using Gerrit), 2016/09/21 11:46:57]

Done and thanks!

+   public:
+    explicit TestApi(AssociatedInterfaceProvider* provider)
+        : provider_(provider) {}
+    ~TestApi() {}
+
+    void SetBinderForName(const std::string& name,
+                          const base::Callback<void(
+                              mojo::ScopedInterfaceEndpointHandle)>& binder) {
+      provider_->SetBinderForName(name, binder);
+    }
+
+    void ClearBinders() { provider_->ClearBinders(); }
+
+   private:
+    AssociatedInterfaceProvider* provider_;
+    DISALLOW_COPY_AND_ASSIGN(TestApi);
+  };
+
   virtual ~AssociatedInterfaceProvider() {}
 
   // Passes an associated endpoint handle to the remote end to be bound to a
@@ -49,6 +68,13 @@ class AssociatedInterfaceProvider {
         mojo::GetProxy(proxy, GetAssociatedGroup());
     GetInterface(Interface::Name_, request.PassHandle());
   }
+
+ private:
+  virtual void SetBinderForName(
+      const std::string& name,
+      const base::Callback<void(mojo::ScopedInterfaceEndpointHandle)>&
+          binder) = 0;
+  virtual void ClearBinders() = 0;
 };
 
 }  // namespace content