Add incremental updates for multipage distillation.

components/dom_distiller/core/fake_distiller.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/dom_distiller/core/fake_distiller.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace dom_distiller {
 namespace test {
 
 MockDistillerFactory::MockDistillerFactory() {}
 MockDistillerFactory::~MockDistillerFactory() {}
 
 FakeDistiller::FakeDistiller(bool execute_callback)
     : execute_callback_(execute_callback) {
   EXPECT_CALL(*this, Die()).Times(testing::AnyNumber());
 }
 
 FakeDistiller::~FakeDistiller() { Die(); }
 
-void FakeDistiller::DistillPage(const GURL& url,
-                                const DistillerCallback& callback) {
+void FakeDistiller::DistillPage(
+    const GURL& url,
+    const DistillationFinishedCallback& article_callback,
+    const DistillationUpdateCallback& page_callback) {
   url_ = url;
-  callback_ = callback;
+  article_callback_ = article_callback;
+  page_callback_ = page_callback;
   if (execute_callback_) {
     scoped_ptr<DistilledArticleProto> proto(new DistilledArticleProto);
     proto->add_pages()->set_url(url_.spec());
     RunDistillerCallback(proto.Pass());
   }
 }
 
 void FakeDistiller::RunDistillerCallback(
     scoped_ptr<DistilledArticleProto> proto) {
   base::MessageLoop::current()->PostTask(
       FROM_HERE,
       base::Bind(&FakeDistiller::RunDistillerCallbackInternal,
                  base::Unretained(this),
                  base::Passed(&proto)));
 }
 
 void FakeDistiller::RunDistillerCallbackInternal(
     scoped_ptr<DistilledArticleProto> proto) {
-  EXPECT_FALSE(callback_.is_null());
-  callback_.Run(proto.Pass());
-  callback_.Reset();
+  EXPECT_FALSE(article_callback_.is_null());
+  article_callback_.Run(proto.Pass());
+  article_callback_.Reset();
 }
 
 }  // namespace test
 }  // namespace dom_distiller