Add a DistilledContentStore (and an in-memory impl)

components/dom_distiller/core/dom_distiller_service.cc

Index: components/dom_distiller/core/dom_distiller_service.cc
diff --git a/components/dom_distiller/core/dom_distiller_service.cc b/components/dom_distiller/core/dom_distiller_service.cc
index 0661f6e237d40469d493c062971d8307e9c86c2b..6683da5f18ea5b300c1dcf2cae4f56ecea85c7c2 100644
--- a/components/dom_distiller/core/dom_distiller_service.cc
+++ b/components/dom_distiller/core/dom_distiller_service.cc
@@ -6,6 +6,7 @@
 
 #include "base/guid.h"
 #include "base/message_loop/message_loop.h"
+#include "components/dom_distiller/core/distilled_content_store.h"
 #include "components/dom_distiller/core/dom_distiller_store.h"
 #include "components/dom_distiller/core/proto/distilled_article.pb.h"
 #include "components/dom_distiller/core/task_tracker.h"
@@ -38,7 +39,9 @@ void RunArticleAvailableCallback(
 DomDistillerService::DomDistillerService(
     scoped_ptr<DomDistillerStoreInterface> store,
     scoped_ptr<DistillerFactory> distiller_factory)
-    : store_(store.Pass()), distiller_factory_(distiller_factory.Pass()) {}
+    : store_(store.Pass()),
+      content_store_(new InMemoryContentStore()),
+      distiller_factory_(distiller_factory.Pass()) {}
 
 DomDistillerService::~DomDistillerService() {}
 
@@ -79,6 +82,7 @@ const std::string DomDistillerService::AddToList(
     task_tracker->AddSaveCallback(base::Bind(
         &DomDistillerService::AddDistilledPageToList, base::Unretained(this)));
     task_tracker->StartDistiller(distiller_factory_.get());
+    task_tracker->StartBlobFetcher();
   }
 
   return task_tracker->GetEntryId();
@@ -118,6 +122,7 @@ scoped_ptr<ViewerHandle> DomDistillerService::ViewEntry(
   TaskTracker* task_tracker = GetOrCreateTaskTrackerForEntry(entry);
   scoped_ptr<ViewerHandle> viewer_handle = task_tracker->AddViewer(delegate);
   task_tracker->StartDistiller(distiller_factory_.get());
+  task_tracker->StartBlobFetcher();
 
   return viewer_handle.Pass();
 }
@@ -132,6 +137,7 @@ scoped_ptr<ViewerHandle> DomDistillerService::ViewUrl(
   TaskTracker* task_tracker = GetOrCreateTaskTrackerForUrl(url);
   scoped_ptr<ViewerHandle> viewer_handle = task_tracker->AddViewer(delegate);
   task_tracker->StartDistiller(distiller_factory_.get());
+  task_tracker->StartBlobFetcher();
 
   return viewer_handle.Pass();
 }
@@ -177,7 +183,8 @@ TaskTracker* DomDistillerService::GetOrCreateTaskTrackerForEntry(
 TaskTracker* DomDistillerService::CreateTaskTracker(const ArticleEntry& entry) {
   TaskTracker::CancelCallback cancel_callback =
       base::Bind(&DomDistillerService::CancelTask, base::Unretained(this));
-  TaskTracker* tracker = new TaskTracker(entry, cancel_callback);
+  TaskTracker* tracker =
+      new TaskTracker(entry, cancel_callback, content_store_.get());
   tasks_.push_back(tracker);
   return tracker;
 }