Remove the in-process PDF viewer from pdf/

pdf/BUILD.gn

Index: pdf/BUILD.gn
diff --git a/pdf/BUILD.gn b/pdf/BUILD.gn
index 584bbbf52e084413ee807e21faef294af1bfeb13..8ae65e3168a163f1c1bc22c8a9039b8ef3a1ea72 100644
--- a/pdf/BUILD.gn
+++ b/pdf/BUILD.gn
@@ -6,28 +6,14 @@ pdf_engine = 0  # 0 PDFium
 
 static_library("pdf") {
   sources = [
-    "button.cc",
-    "button.h",
     "chunk_stream.cc",
     "chunk_stream.h",
-    "control.cc",
-    "control.h",
     "document_loader.cc",
     "document_loader.h",
     "draw_utils.cc",
     "draw_utils.h",
-    "fading_control.cc",
-    "fading_control.h",
-    "fading_controls.cc",
-    "fading_controls.h",
-    "instance.cc",
-    "instance.h",
-    "number_image_generator.cc",
-    "number_image_generator.h",
     "out_of_process_instance.cc",
     "out_of_process_instance.h",
-    "page_indicator.cc",
-    "page_indicator.h",
     "paint_aggregator.cc",
     "paint_aggregator.h",
     "paint_manager.cc",
@@ -37,12 +23,8 @@ static_library("pdf") {
     "pdf_engine.h",
     "preview_mode_client.cc",
     "preview_mode_client.h",
-    "progress_control.cc",
-    "progress_control.h",
     "resource.h",
     "resource_consts.h",
-    "thumbnail_control.cc",
-    "thumbnail_control.h",
   ]
 
   # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.