Take GL version and extensions correctly into account when binding functions

ui/gl/gl_implementation_ozone.cc

Index: ui/gl/gl_implementation_ozone.cc
diff --git a/ui/gl/gl_implementation_ozone.cc b/ui/gl/gl_implementation_ozone.cc
index 10ab44d5b25936ee595a43ab4c7c5a14c145af05..0d9fe6b310de1729ab641bb861b28ae5b1278567 100644
--- a/ui/gl/gl_implementation_ozone.cc
+++ b/ui/gl/gl_implementation_ozone.cc
@@ -5,6 +5,7 @@
 #include "base/bind.h"
 #include "ui/gfx/ozone/surface_factory_ozone.h"
 #include "ui/gl/gl_bindings.h"
+#include "ui/gl/gl_context_stub_with_extensions.h"
 #include "ui/gl/gl_egl_api_implementation.h"
 #include "ui/gl/gl_gl_api_implementation.h"
 #include "ui/gl/gl_implementation.h"
@@ -32,7 +33,7 @@ void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) {
   impls->push_back(kGLImplementationOSMesaGL);
 }
 
-bool InitializeGLBindings(GLImplementation implementation) {
+bool InitializeStaticGLBindings(GLImplementation implementation) {
   // Prevent reinitialization with a different implementation. Once the gpu
   // unit tests have initialized with kGLImplementationMock, we don't want to
   // later switch to another GL implementation.
@@ -41,7 +42,7 @@ bool InitializeGLBindings(GLImplementation implementation) {
 
   switch (implementation) {
     case kGLImplementationOSMesaGL:
-      return InitializeGLBindingsOSMesaGL();
+      return InitializeStaticGLBindingsOSMesaGL();
     case kGLImplementationEGLGLES2:
       ui::OzonePlatform::Initialize();
       if (!gfx::SurfaceFactoryOzone::GetInstance()->LoadEGLGLES2Bindings(
@@ -49,8 +50,8 @@ bool InitializeGLBindings(GLImplementation implementation) {
               base::Bind(&SetGLGetProcAddressProc)))
         return false;
       SetGLImplementation(kGLImplementationEGLGLES2);
-      InitializeGLBindingsGL();
-      InitializeGLBindingsEGL();
+      InitializeStaticGLBindingsGL();
+      InitializeStaticGLBindingsEGL();
 
       // These two functions take single precision float rather than double
       // precision float parameters in GLES.
@@ -60,7 +61,7 @@ bool InitializeGLBindings(GLImplementation implementation) {
     case kGLImplementationMockGL: {
       SetGLGetProcAddressProc(GetMockGLProcAddress);
       SetGLImplementation(kGLImplementationMockGL);
-      InitializeGLBindingsGL();
+      InitializeStaticGLBindingsGL();
       break;
     }
     default:
@@ -72,19 +73,25 @@ bool InitializeGLBindings(GLImplementation implementation) {
   return true;
 }
 
-bool InitializeGLExtensionBindings(GLImplementation implementation,
-                                   GLContext* context) {
+bool InitializeDynamicGLBindings(GLImplementation implementation,
+                                 GLContext* context) {
   switch (implementation) {
     case kGLImplementationOSMesaGL:
-      InitializeGLExtensionBindingsGL(context);
-      InitializeGLExtensionBindingsOSMESA(context);
+      InitializeDynamicGLBindingsGL(context);
+      InitializeDynamicGLBindingsOSMESA(context);
       break;
     case kGLImplementationEGLGLES2:
-      InitializeGLExtensionBindingsGL(context);
-      InitializeGLExtensionBindingsEGL(context);
+      InitializeDynamicGLBindingsGL(context);
+      InitializeDynamicGLBindingsEGL(context);
       break;
     case kGLImplementationMockGL:
-      InitializeGLExtensionBindingsGL(context);
+      if (!context) {
+        scoped_refptr<GLContextStubWithExtensions> mock_context(
+            new GLContextStubWithExtensions());
+        mock_context->SetGLVersionString("3.0");
+        InitializeDynamicGLBindingsGL(mock_context.get());
+      } else
+        InitializeDynamicGLBindingsGL(context);
       break;
     default:
       return false;