GN: Visual Studio generator does not depend on is_debug variable

tools/gn/visual_studio_writer.h

Index: tools/gn/visual_studio_writer.h
diff --git a/tools/gn/visual_studio_writer.h b/tools/gn/visual_studio_writer.h
index e9f2658e58b26ccbc18ffcb018b0fe4b6824e6a2..6950dd68e2147bd00bfb7e6a14ed42cbd4251978 100644
--- a/tools/gn/visual_studio_writer.h
+++ b/tools/gn/visual_studio_writer.h
@@ -75,7 +75,6 @@ class VisualStudioWriter {
   using SolutionFolders = std::vector<SolutionEntry*>;
 
   explicit VisualStudioWriter(const BuildSettings* build_settings,
-                              bool is_debug_config,
                               const char* config_platform,
                               Version version);
   ~VisualStudioWriter();
@@ -107,9 +106,6 @@ class VisualStudioWriter {
   // Visual Studio version string.
   const char* version_string_;
 
-  // Indicates if project files are generated for Debug mode configuration.
-  bool is_debug_config_;
-
   // Platform for solution configuration (Win32, x64). Some projects may be
   // configured for different platform.
   const char* config_platform_;