Remove unneeded includes from some printing/ code.

Change-Id: I4ce13d9ed00da78a8a715e0e45847fc1cfb3fe4e
Reviewed-on: https://chromium-review.googlesource.com/c/1457924Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630020}

printing/print_job_constants.cc

@@ -4,8 +4,6 @@
 
 #include "printing/print_job_constants.h"
 
-#include "printing/buildflags/buildflags.h"
-
 namespace printing {
 
 // True if this is the first preview request.

printing/print_job_constants.h

@@ -5,8 +5,6 @@
 #ifndef PRINTING_PRINT_JOB_CONSTANTS_H_
 #define PRINTING_PRINT_JOB_CONSTANTS_H_
 
-#include "build/build_config.h"
-#include "printing/buildflags/buildflags.h"
 #include "printing/printing_export.h"
 
 namespace printing {

printing/printing_context.cc

@@ -5,8 +5,6 @@
 #include "printing/printing_context.h"
 
 #include "base/logging.h"
-#include "base/values.h"
-#include "printing/buildflags/buildflags.h"
 #include "printing/page_setup.h"
 #include "printing/page_size_margins.h"
 #include "printing/print_job_constants.h"

printing/printing_context.h

@@ -12,6 +12,7 @@
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "base/values.h"
+#include "build/build_config.h"
 #include "printing/native_drawing_context.h"
 #include "printing/print_settings.h"
 #include "ui/gfx/native_widget_types.h"