Tests: Add getProcAddress method to GLWindowBase.

util/EGLWindow.cpp

@@ -660,6 +660,11 @@ bool EGLWindow::hasError() const
     return eglGetError() != EGL_SUCCESS;
 }
 
+angle::GenericProc EGLWindow::getProcAddress(const char *name)
+{
+    return eglGetProcAddress(name);
+}
+
 // static
 void GLWindowBase::Delete(GLWindowBase **window)
 {

util/EGLWindow.h

@@ -24,6 +24,7 @@ namespace angle
 {
 class Library;
 struct PlatformMethods;
+using GenericProc = void (*)();
 }  // namespace angle
 
 struct ANGLE_UTIL_EXPORT ConfigParameters
@@ -78,6 +79,7 @@ class ANGLE_UTIL_EXPORT GLWindowBase : angle::NonCopyable
     virtual bool makeCurrent()                                      = 0;
     virtual bool hasError() const                                   = 0;
     virtual bool setSwapInterval(EGLint swapInterval)               = 0;
+    virtual angle::GenericProc getProcAddress(const char *name)     = 0;
 
     bool isMultisample() const { return mConfigParams.multisample; }
     bool isDebugEnabled() const { return mConfigParams.debug; }
@@ -123,6 +125,7 @@ class ANGLE_UTIL_EXPORT EGLWindow : public GLWindowBase
     bool makeCurrent() override;
     bool hasError() const override;
     bool setSwapInterval(EGLint swapInterval) override;
+    angle::GenericProc getProcAddress(const char *name) override;
 
     // Only initializes the Display.
     bool initializeDisplay(OSWindow *osWindow,

util/windows/WGLWindow.cpp

@@ -240,6 +240,11 @@ bool WGLWindow::hasError() const
     return GetLastError() != S_OK;
 }
 
+angle::GenericProc WGLWindow::getProcAddress(const char *name)
+{
+    return GetProcAddressWithFallback(name);
+}
+
 // static
 WGLWindow *WGLWindow::New(int glesMajorVersion, int glesMinorVersion)
 {

util/windows/WGLWindow.h

@@ -40,6 +40,7 @@ class ANGLE_UTIL_EXPORT WGLWindow : public GLWindowBase
     void swap() override;
     bool hasError() const override;
     bool setSwapInterval(EGLint swapInterval) override;
+    angle::GenericProc getProcAddress(const char *name) override;
 
   private:
     WGLWindow(int glesMajorVersion, int glesMinorVersion);