Factor common code into native_viewport_controller.cc

mojo/services/native_viewport/native_viewport_mac.mm

 // Copyright 2013 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 "mojo/services/native_viewport/native_viewport.h"
 
 #import <AppKit/NSApplication.h>
 #import <AppKit/NSView.h>
 #import <AppKit/NSWindow.h>
 
-#include "base/bind.h"
-#include "base/mac/scoped_nsobject.h"
-#include "gpu/command_buffer/client/gl_in_process_context.h"
-#include "gpu/command_buffer/client/gles2_implementation.h"
-#include "ui/gfx/rect.h"
-
 namespace mojo {
 namespace services {
 
 class NativeViewportMac : public NativeViewport {
  public:
   NativeViewportMac(NativeViewportDelegate* delegate)
-      : delegate_(delegate),
-        window_(nil),
-        rect_(10, 10, 500, 500) {
+      : NativeViewport(delegate),
+        window_(nil) {
+    bounds_ = gfx::Rect(10, 10, 500, 500);
+
     [NSApplication sharedApplication];
-
     window_ = [[NSWindow alloc]
-                  initWithContentRect:NSRectFromCGRect(rect_.ToCGRect())
+                  initWithContentRect:NSRectFromCGRect(bounds_.ToCGRect())
                             styleMask:NSTitledWindowMask
                               backing:NSBackingStoreBuffered
                                 defer:NO];
     [window_ orderFront:nil];
+    widget_ = [window_ contentView];
 
-    gpu::GLInProcessContextAttribs attribs;
-    gl_context_.reset(gpu::GLInProcessContext::CreateContext(
-        false, [window_ contentView], rect_.size(), false,
-        attribs, gfx::PreferDiscreteGpu));
-    gl_context_->SetContextLostCallback(base::Bind(
-        &NativeViewportMac::OnGLContextLost, base::Unretained(this)));
-
-    delegate_->OnGLContextAvailable(gl_context_->GetImplementation());
+    OnAcceleratedWidgetAvailable();
   }
 
   virtual ~NativeViewportMac() {
     [window_ orderOut:nil];
     [window_ close];
   }
 
  private:
   // Overridden from NativeViewport:
   virtual void Close() OVERRIDE {
     // TODO(beng): perform this in response to NSWindow destruction.
     delegate_->OnDestroyed();
   }
 
-  void OnGLContextLost() {
-    gl_context_.reset();
-    delegate_->OnGLContextLost();
-  }
-
-  NativeViewportDelegate* delegate_;
   NSWindow* window_;
-  gfx::Rect rect_;
-  scoped_ptr<gpu::GLInProcessContext> gl_context_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewportMac);
 };
 
 // static
 scoped_ptr<NativeViewport> NativeViewport::Create(
     shell::Context* context,
     NativeViewportDelegate* delegate) {
   return scoped_ptr<NativeViewport>(new NativeViewportMac(delegate)).Pass();
 }
 
 }  // namespace services
 }  // namespace mojo