When GL implementation is Mock or None return rather than setting the skia-gpu GL interface with ...

ui/gfx/gl/gl_bindings_skia_in_process.cc

 // Copyright (c) 2011 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.
 
 
 #include "ui/gfx/gl/gl_bindings_skia_in_process.h"
 
 #include "base/logging.h"
 #include "ui/gfx/gl/gl_bindings.h"
 #include "ui/gfx/gl/gl_implementation.h"
@@ skipping 425 matching lines @@
 
 namespace gfx {
 
 void BindSkiaToInProcessGL() {
   static bool host_StubGL_installed = false;
   if (!host_StubGL_installed) {
     GrGLBinding binding;
     switch (gfx::GetGLImplementation()) {
       case gfx::kGLImplementationNone:
         NOTREACHED();
-        break;
+        return;
       case gfx::kGLImplementationDesktopGL:
         binding = kDesktop_GrGLBinding;
         break;
       case gfx::kGLImplementationOSMesaGL:
         binding = kDesktop_GrGLBinding;
         break;
       case gfx::kGLImplementationEGLGLES2:
         binding = kES2_GrGLBinding;
         break;
       case gfx::kGLImplementationMockGL:
         NOTREACHED();
-        break;
+        return;
     }
 
     static GrGLInterface host_gl_interface = {
       binding,
 
       kProbe_GrGLCapability,   // NPOTRenderTargetSupport
       kProbe_GrGLCapability,   // MinRenderTargetHeight
       kProbe_GrGLCapability,   // MinRenderTargetWidth
 
       StubGLActiveTexture,
@@ skipping 105 matching lines @@
       NULL,  // glBindFragDataLocationIndexed
       GrGLInterface::kStaticInitEndGuard,
     };
     GrGLSetGLInterface(&host_gl_interface);
     host_StubGL_installed = true;
   }
 }
 
 }  // namespace gfx