Added the Vulkan Context Provider implementation.

content/browser/compositor/browser_compositor_output_surface.h

 // Copyright 2014 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 CONTENT_BROWSER_COMPOSITOR_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
 #define CONTENT_BROWSER_COMPOSITOR_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
 
 #include "base/macros.h"
 #include "base/threading/non_thread_safe.h"
 #include "build/build_config.h"
 #include "cc/output/output_surface.h"
 #include "cc/scheduler/begin_frame_source.h"
 #include "content/common/content_export.h"
 #include "ui/compositor/compositor_vsync_manager.h"
+#include "ui/gfx/native_widget_types.h"
 
 namespace cc {
 class SoftwareOutputDevice;
 }
 
 namespace gfx {
 enum class SwapResult;
 }
 
 namespace content {
@@ skipping 47 matching lines @@
       base::SingleThreadTaskRunner* task_runner,
       std::unique_ptr<BrowserCompositorOverlayCandidateValidator>
           overlay_candidate_validator);
 
   // Constructor used by the software implementation.
   BrowserCompositorOutputSurface(
       std::unique_ptr<cc::SoftwareOutputDevice> software_device,
       const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
       base::SingleThreadTaskRunner* task_runner);
 
+#if defined(ENABLE_VULKAN)

[piman, 2016/04/19 23:42:02]

ditto, works without ifdef?

+  // Constructor used by the Vulkan implementation.
+  BrowserCompositorOutputSurface(
+      const scoped_refptr<cc::VulkanContextProvider>& vulkan_context_provider,
+      const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager);
+#endif
+
   scoped_refptr<ui::CompositorVSyncManager> vsync_manager_;
   std::unique_ptr<cc::SyntheticBeginFrameSource> synthetic_begin_frame_source_;
   ReflectorImpl* reflector_;
 
   // True when BeginFrame scheduling is enabled.
   bool use_begin_frame_scheduling_;
 
  private:
   void Initialize();
 
   void UpdateVSyncParametersInternal(base::TimeTicks timebase,
                                      base::TimeDelta interval);
 
   std::unique_ptr<BrowserCompositorOverlayCandidateValidator>
       overlay_candidate_validator_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserCompositorOutputSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_