Add support for multipage distillation.

components/dom_distiller/core/fake_distiller.cc

Index: components/dom_distiller/core/fake_distiller.cc
diff --git a/components/dom_distiller/core/fake_distiller.cc b/components/dom_distiller/core/fake_distiller.cc
index 3f1f976f653f3818ecace3fa45a1447548a025c3..43d63299c6a9d84af8a84c8bec7dca4935757e4a 100644
--- a/components/dom_distiller/core/fake_distiller.cc
+++ b/components/dom_distiller/core/fake_distiller.cc
@@ -21,7 +21,8 @@ FakeDistiller::FakeDistiller(bool execute_callback) :
 
 FakeDistiller::~FakeDistiller() { Die(); }
 
-void FakeDistiller::RunDistillerCallback(scoped_ptr<DistilledPageProto> proto) {
+void FakeDistiller::RunDistillerCallback(
+    scoped_ptr<DistilledArticleProto> proto) {
   base::MessageLoop::current()->PostTask(
       FROM_HERE,
       base::Bind(&FakeDistiller::RunDistillerCallbackInternal,
@@ -30,7 +31,7 @@ void FakeDistiller::RunDistillerCallback(scoped_ptr<DistilledPageProto> proto) {
 }
 
 void FakeDistiller::RunDistillerCallbackInternal(
-    scoped_ptr<DistilledPageProto> proto) {
+    scoped_ptr<DistilledArticleProto> proto) {
   EXPECT_FALSE(callback_.is_null());
   callback_.Run(proto.Pass());
   callback_.Reset();