--- qt-everywhere-src-6.9.3.old/qtwebengine/src/3rdparty/chromium/third_party/blink/renderer/core/css/properties/css_color_function_parser.cc
+++ qt-everywhere-src-6.9.3/qtwebengine/src/3rdparty/chromium/third_party/blink/renderer/core/css/properties/css_color_function_parser.cc
@@ -18,6 +18,8 @@
 #include "third_party/blink/renderer/core/css/properties/css_parsing_utils.h"
 #include "third_party/blink/renderer/core/css_value_keywords.h"
 
+using namespace std;
+
 namespace blink {
 
 namespace {
--- qt-everywhere-src-6.9.3.old/qtwebengine/src/3rdparty/chromium/third_party/blink/renderer/core/html/track/vtt/vtt_cue_layout_algorithm.cc
+++ qt-everywhere-src-6.9.3/qtwebengine/src/3rdparty/chromium/third_party/blink/renderer/core/html/track/vtt/vtt_cue_layout_algorithm.cc
@@ -12,6 +12,8 @@
 #include "third_party/blink/renderer/core/layout/inline/inline_cursor.h"
 #include "third_party/blink/renderer/core/layout/layout_inline.h"
 
+using namespace std;
+
 namespace blink {
 
 namespace {
--- qt-everywhere-src-6.9.3.old/qtwebengine/src/3rdparty/chromium/third_party/blink/renderer/core/streams/miscellaneous_operations.cc
+++ qt-everywhere-src-6.9.3/qtwebengine/src/3rdparty/chromium/third_party/blink/renderer/core/streams/miscellaneous_operations.cc
@@ -23,6 +23,8 @@
 #include "third_party/blink/renderer/platform/heap/visitor.h"
 #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
 
+using namespace std;
+
 namespace blink {
 
 namespace {
--- qt-everywhere-src-6.9.3.old/qtwebengine/src/3rdparty/chromium/third_party/blink/renderer/core/style/style_crossfade_image.cc
+++ qt-everywhere-src-6.9.3/qtwebengine/src/3rdparty/chromium/third_party/blink/renderer/core/style/style_crossfade_image.cc
@@ -15,6 +15,8 @@
 #include "third_party/blink/renderer/core/style/style_generated_image.h"
 #include "third_party/blink/renderer/platform/graphics/crossfade_generated_image.h"
 
+using namespace std;
+
 namespace blink {
 
 StyleCrossfadeImage::StyleCrossfadeImage(cssvalue::CSSCrossfadeValue& value,
--- qt-everywhere-src-6.9.3.old/qtwebengine/src/3rdparty/chromium/third_party/blink/renderer/platform/graphics/color.cc
+++ qt-everywhere-src-6.9.3/qtwebengine/src/3rdparty/chromium/third_party/blink/renderer/platform/graphics/color.cc
@@ -47,6 +47,8 @@
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/color_conversions.h"
 
+using namespace std;
+
 namespace blink {
 
 const Color Color::kBlack = Color(0xFF000000);