Add mojom module suffix in .mojom files in content.

content/public/test/test_mojo_app.h

Index: content/public/test/test_mojo_app.h
diff --git a/content/public/test/test_mojo_app.h b/content/public/test/test_mojo_app.h
index be8c902c77822d27147d925f918a298ba05677d5..01824ad9709e7b28c87c31cd5d68b73a35e5ef03 100644
--- a/content/public/test/test_mojo_app.h
+++ b/content/public/test/test_mojo_app.h
@@ -15,11 +15,11 @@ namespace content {
 
 extern const char kTestMojoAppUrl[];
 
-// Simple Mojo app which provides a TestMojoService impl. The app terminates
-// itself after its TestService fulfills a single DoSomething call.
+// Simple Mojo app which provides a mojom::TestMojoService impl. The app
+// terminates itself after its TestService fulfills a single DoSomething call.
 class TestMojoApp : public mojo::ShellClient,
-                    public mojo::InterfaceFactory<TestMojoService>,
-                    public TestMojoService {
+                    public mojo::InterfaceFactory<mojom::TestMojoService>,
+                    public mojom::TestMojoService {
  public:
   TestMojoApp();
   ~TestMojoApp() override;
@@ -28,15 +28,15 @@ class TestMojoApp : public mojo::ShellClient,
   // mojo::ShellClient:
   bool AcceptConnection(mojo::Connection* connection) override;
 
-  // mojo::InterfaceFactory<TestMojoService>:
+  // mojo::InterfaceFactory<mojom::TestMojoService>:
   void Create(mojo::Connection* connection,
-              mojo::InterfaceRequest<TestMojoService> request) override;
+              mojo::InterfaceRequest<mojom::TestMojoService> request) override;
 
   // TestMojoService:
   void DoSomething(const DoSomethingCallback& callback) override;
   void GetRequestorName(const GetRequestorNameCallback& callback) override;
 
-  mojo::Binding<TestMojoService> service_binding_;
+  mojo::Binding<mojom::TestMojoService> service_binding_;
 
   // The name of the app connecting to us.
   std::string requestor_name_;