arc: Add methods to IntentHelperInstance to read ARC contents

components/arc/test/fake_intent_helper_instance.cc

Index: components/arc/test/fake_intent_helper_instance.cc
diff --git a/components/arc/test/fake_intent_helper_instance.cc b/components/arc/test/fake_intent_helper_instance.cc
index 77741bf15282b25c35ae52807a313c0b99806944..1db18fdbabcc58cf9f0e5bea3f4bdf4fa5d85b35 100644
--- a/components/arc/test/fake_intent_helper_instance.cc
+++ b/components/arc/test/fake_intent_helper_instance.cc
@@ -27,6 +27,10 @@ FakeIntentHelperInstance::~FakeIntentHelperInstance() {}
 void FakeIntentHelperInstance::AddPreferredPackage(
     const mojo::String& package_name) {}
 
+void FakeIntentHelperInstance::GetFileSize(
+    const mojo::String& url,
+    const GetFileSizeCallback& callback) {}
+
 void FakeIntentHelperInstance::HandleIntent(mojom::IntentInfoPtr intent,
                                             mojom::ActivityNamePtr activity) {}
 
@@ -40,6 +44,10 @@ void FakeIntentHelperInstance::HandleUrlList(
 
 void FakeIntentHelperInstance::Init(mojom::IntentHelperHostPtr host_ptr) {}
 
+void FakeIntentHelperInstance::OpenFileToRead(
+    const mojo::String& url,
+    const OpenFileToReadCallback& callback) {}
+
 void FakeIntentHelperInstance::RequestActivityIcons(
     mojo::Array<mojom::ActivityNamePtr> activities,
     ::arc::mojom::ScaleFactor scale_factor,