Revert "reland of Improve linearized pdf load/show time."

pdf/BUILD.gn

Index: pdf/BUILD.gn
diff --git a/pdf/BUILD.gn b/pdf/BUILD.gn
index 64cd7595b77235f8e01afee27e5d3fc75489317b..4e4d94655484680ba9b56b98c959e4fd31fc66d2 100644
--- a/pdf/BUILD.gn
+++ b/pdf/BUILD.gn
@@ -18,10 +18,10 @@ static_library("pdf") {
     "//ppapi/cpp:objects",
     "//ppapi/cpp/private:internal_module",
     "//ui/base",
-    "//ui/gfx/range",
   ]
 
   sources = [
+    "chunk_stream.cc",
     "chunk_stream.h",
     "document_loader.cc",
     "document_loader.h",
@@ -38,13 +38,6 @@ static_library("pdf") {
     "pdf_engine.h",
     "preview_mode_client.cc",
     "preview_mode_client.h",
-    "range_set.cc",
-    "range_set.h",
-    "timer.cc",
-    "timer.h",
-    "url_loader_wrapper.h",
-    "url_loader_wrapper_impl.cc",
-    "url_loader_wrapper_impl.h",
   ]
 
   if (pdf_engine == 0) {
@@ -79,8 +72,6 @@ static_library("pdf") {
 test("pdf_unittests") {
   sources = [
     "chunk_stream_unittest.cc",
-    "document_loader_unittest.cc",
-    "range_set_unittest.cc",
     "run_all_unittests.cc",
   ]
 
@@ -92,6 +83,5 @@ test("pdf_unittests") {
     "//ppapi/cpp",
     "//testing/gmock",
     "//testing/gtest",
-    "//ui/gfx/range",
   ]
 }