Reland of Improve linearized pdf load/show time.

pdf/out_of_process_instance.cc

Index: pdf/out_of_process_instance.cc
diff --git a/pdf/out_of_process_instance.cc b/pdf/out_of_process_instance.cc
index 981bfaf8d3753dd6b02736488506597bfaa72873..eb1c17a022a4d67a78c2a5c83f29e1c109e630a3 100644
--- a/pdf/out_of_process_instance.cc
+++ b/pdf/out_of_process_instance.cc
@@ -855,15 +855,6 @@ void OutOfProcessInstance::DidOpen(int32_t result) {
     NOTREACHED();
     DocumentLoadFailed();
   }
-
-  // If it's a progressive load, cancel the stream URL request so that requests
-  // can be made on the original URL.
-  // TODO(raymes): Make this clearer once the in-process plugin is deleted.
-  if (engine_->IsProgressiveLoad()) {
-    pp::VarDictionary message;
-    message.Set(kType, kJSCancelStreamUrlType);
-    PostMessage(message);
-  }
 }
 
 void OutOfProcessInstance::DidOpenPreview(int32_t result) {
@@ -1501,6 +1492,12 @@ uint32_t OutOfProcessInstance::GetBackgroundColor() {
   return background_color_;
 }
 
+void OutOfProcessInstance::CancelBrowserDownload() {
+  pp::VarDictionary message;
+  message.Set(kType, kJSCancelStreamUrlType);
+  PostMessage(message);
+}
+
 void OutOfProcessInstance::IsSelectingChanged(bool is_selecting) {
   pp::VarDictionary message;
   message.Set(kType, kJSSetIsSelectingType);