Remove the old task manager view

chrome/browser/task_manager/printing_information.cc

Index: chrome/browser/task_manager/printing_information.cc
diff --git a/chrome/browser/task_manager/printing_information.cc b/chrome/browser/task_manager/printing_information.cc
index 4256e4e239770360c5e5e29787c6ab0b7e7a7cb9..242c39a61aa03c04067d608450de7dbbee394f3e 100644
--- a/chrome/browser/task_manager/printing_information.cc
+++ b/chrome/browser/task_manager/printing_information.cc
@@ -29,6 +29,8 @@ using content::WebContents;
 
 namespace task_manager {
 
+#if defined(ENABLE_PRINT_PREVIEW)
+
 class PrintingResource : public RendererResource {
  public:
   explicit PrintingResource(content::WebContents* web_contents);
@@ -114,4 +116,6 @@ std::unique_ptr<RendererResource> PrintingInformation::MakeResource(
   return std::unique_ptr<RendererResource>(new PrintingResource(web_contents));
 }
 
+#endif  // defined(ENABLE_PRINT_PREVIEW)
+
 }  // namespace task_manager