Use pdfium::Contains() in a few more places.

No need to call container.count() when the actual count is not needed.

Change-Id: I67a396be186b2211ce1b90038342c7d3a0f3ea8f
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/72053
Reviewed-by: Daniel Hosseinian <dhoss@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

core/fpdfapi/parser/cpdf_cross_ref_avail.cpp

diff --git a/core/fpdfapi/parser/cpdf_cross_ref_avail.cpp b/core/fpdfapi/parser/cpdf_cross_ref_avail.cpp
index 8a66c85..cdc818b 100644
--- a/core/fpdfapi/parser/cpdf_cross_ref_avail.cpp
+++ b/core/fpdfapi/parser/cpdf_cross_ref_avail.cpp
@@ -13,6 +13,7 @@
 #include "core/fpdfapi/parser/cpdf_syntax_parser.h"
 #include "core/fpdfapi/parser/fpdf_parser_utility.h"
 #include "third_party/base/numerics/safe_conversions.h"
+#include "third_party/base/stl_util.h"
 
 namespace {
 
@@ -199,7 +200,7 @@
 }
 
 void CPDF_CrossRefAvail::AddCrossRefForCheck(FX_FILESIZE crossref_offset) {
-  if (registered_crossrefs_.count(crossref_offset))
+  if (pdfium::Contains(registered_crossrefs_, crossref_offset))
     return;
 
   cross_refs_for_check_.push(crossref_offset);

core/fpdfapi/parser/cpdf_object_avail.cpp

diff --git a/core/fpdfapi/parser/cpdf_object_avail.cpp b/core/fpdfapi/parser/cpdf_object_avail.cpp
index b788bdd..171c521 100644
--- a/core/fpdfapi/parser/cpdf_object_avail.cpp
+++ b/core/fpdfapi/parser/cpdf_object_avail.cpp
@@ -11,6 +11,7 @@
 #include "core/fpdfapi/parser/cpdf_object_walker.h"
 #include "core/fpdfapi/parser/cpdf_read_validator.h"
 #include "core/fpdfapi/parser/cpdf_reference.h"
+#include "third_party/base/stl_util.h"
 
 CPDF_ObjectAvail::CPDF_ObjectAvail(
     const RetainPtr<CPDF_ReadValidator>& validator,
@@ -147,5 +148,5 @@
 }
 
 bool CPDF_ObjectAvail::HasObjectParsed(uint32_t obj_num) const {
-  return parsed_objnums_.count(obj_num) > 0;
+  return pdfium::Contains(parsed_objnums_, obj_num);
 }

fpdfsdk/formfiller/cffl_listbox.cpp

diff --git a/fpdfsdk/formfiller/cffl_listbox.cpp b/fpdfsdk/formfiller/cffl_listbox.cpp
index f5990d1..0cbc20a 100644
--- a/fpdfsdk/formfiller/cffl_listbox.cpp
+++ b/fpdfsdk/formfiller/cffl_listbox.cpp
@@ -14,6 +14,7 @@
 #include "fpdfsdk/cpdfsdk_widget.h"
 #include "fpdfsdk/formfiller/cffl_interactiveformfiller.h"
 #include "fpdfsdk/pwl/cpwl_list_box.h"
+#include "third_party/base/stl_util.h"
 
 CFFL_ListBox::CFFL_ListBox(CPDFSDK_FormFillEnvironment* pApp,
                            CPDFSDK_Widget* pWidget)
@@ -91,7 +92,7 @@
     size_t nSelCount = 0;
     for (int32_t i = 0, sz = pListBox->GetCount(); i < sz; ++i) {
       if (pListBox->IsItemSelected(i)) {
-        if (m_OriginSelections.count(i) == 0)
+        if (!pdfium::Contains(m_OriginSelections, i))
           return true;
 
         ++nSelCount;