Make dynamic mock bindings initialization consistent with other GL implementations

ui/gl/gl_context.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_GL_GL_CONTEXT_H_
 #define UI_GL_GL_CONTEXT_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 139 matching lines @@
     bool canceled_;
   };
 
   // Sets the GL api to the real hardware API (vs the VirtualAPI)
   static void SetRealGLApi();
   virtual void SetCurrent(GLSurface* surface);
 
   // Initialize function pointers to functions where the bound version depends
   // on GL version or supported extensions. Should be called immediately after
   // this context is made current.
-  bool InitializeDynamicBindings();
+  void InitializeDynamicBindings();
 
   // Returns the last real (non-virtual) GLContext made current.
   static GLContext* GetRealCurrent();
 
   virtual void OnSetSwapInterval(int interval) = 0;
 
  private:
   friend class base::RefCounted<GLContext>;
 
   // For GetRealCurrent.
@@ skipping 31 matching lines @@
 // scoped_refptr containing the initialized GLContext or nullptr if
 // initialization fails.
 GL_EXPORT scoped_refptr<GLContext> InitializeGLContext(
     scoped_refptr<GLContext> context,
     GLSurface* compatible_surface,
     GpuPreference gpu_preference);
 
 }  // namespace gl
 
 #endif  // UI_GL_GL_CONTEXT_H_