Revert "Fix crash in WGL context creation"

This reverts commit 777b046.

Change-Id: I37693134991a6036a27b58ab2b9b9e5542b0feae
Reviewed-on: https://codereview.qt-project.org/c/qt/qtwebengine-chromium/+/595114
Reviewed-by: Allan Sandfeld Jensen <[email protected]>

Author: stampho

chromium/ui/gl/generate_bindings.py

@@ -43,8 +43,6 @@
                 function.  This may happen for example when functions
                 are added to a new version of an extension, but the
                 extension string is not modified.
-   check_for_nullptr: Workaround for QTBUG-124370. Adds a check that ensures
-                the function has been bound already.
 By default, the function gets its name from the first name in its names or
 versions array. This can be overridden by supplying a 'known_as' key.
 
@@ -2982,8 +2980,7 @@
   'arguments': 'HDC hdc', },
 { 'return_type': 'HGLRC',
   'names': ['wglCreateContextAttribsARB'],
-  'arguments': 'HDC hDC, HGLRC hShareContext, const int* attribList',
-  'check_for_nullptr': True, },
+  'arguments': 'HDC hDC, HGLRC hShareContext, const int* attribList', },
 { 'return_type': 'HGLRC',
   'names': ['wglCreateLayerContext'],
   'arguments': 'HDC hdc, int iLayerPlane', },
@@ -3730,12 +3727,8 @@ def MakeArgNames(arguments):
       file.write('  driver_->fn.%sFn(%s);\n' %
           (function_name, argument_names))
     else:
-      if ('check_for_nullptr' in func):
-        file.write('  return driver_->fn.%sFn ?\n driver_->fn.%sFn(%s)\n : nullptr;\n' %
-            (function_name, function_name, argument_names))
-      else:
-        file.write('  return driver_->fn.%sFn(%s);\n' %
-            (function_name, argument_names))
+      file.write('  return driver_->fn.%sFn(%s);\n' %
+          (function_name, argument_names))
     file.write('}\n')
 
   # Write TraceGLApi functions

chromium/ui/gl/gl_bindings_autogen_wgl.cc

@@ -124,10 +124,8 @@ HGLRC WGLApiBase::wglCreateContextFn(HDC hdc) {
 HGLRC WGLApiBase::wglCreateContextAttribsARBFn(HDC hDC,
                                                HGLRC hShareContext,
                                                const int* attribList) {
-  return driver_->fn.wglCreateContextAttribsARBFn
-             ? driver_->fn.wglCreateContextAttribsARBFn(hDC, hShareContext,
-                                                        attribList)
-             : nullptr;
+  return driver_->fn.wglCreateContextAttribsARBFn(hDC, hShareContext,
+                                                  attribList);
 }
 
 HGLRC WGLApiBase::wglCreateLayerContextFn(HDC hdc, int iLayerPlane) {