Adding status to swap complete

ui/gl/gl_surface.h

Index: ui/gl/gl_surface.h
diff --git a/ui/gl/gl_surface.h b/ui/gl/gl_surface.h
index b67ca69a63968758dd4e77024924d63015311856..9fee0a37c2cc6d09b9ab6bd3253ea106c17c832a 100644
--- a/ui/gl/gl_surface.h
+++ b/ui/gl/gl_surface.h
@@ -15,6 +15,7 @@
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/overlay_transform.h"
+#include "ui/gfx/swap_result.h"
 #include "ui/gl/gl_export.h"
 #include "ui/gl/gl_implementation.h"
 
@@ -58,7 +59,7 @@ class GL_EXPORT GLSurface : public base::RefCounted<GLSurface> {
 
   // Swaps front and back buffers. This has no effect for off-screen
   // contexts.
-  virtual bool SwapBuffers() = 0;
+  virtual gfx::SwapResult SwapBuffers() = 0;
 
   // Get the size of the surface.
   virtual gfx::Size GetSize() = 0;
@@ -73,7 +74,7 @@ class GL_EXPORT GLSurface : public base::RefCounted<GLSurface> {
   // FBO. Otherwise returns 0.
   virtual unsigned int GetBackingFrameBufferObject();
 
-  typedef base::Callback<void()> SwapCompletionCallback;
+  typedef base::Callback<void(SwapResult)> SwapCompletionCallback;
   // Swaps front and back buffers. This has no effect for off-screen
   // contexts. On some platforms, we want to send SwapBufferAck only after the
   // surface is displayed on screen. The callback can be used to delay sending
@@ -82,7 +83,7 @@ class GL_EXPORT GLSurface : public base::RefCounted<GLSurface> {
   virtual bool SwapBuffersAsync(const SwapCompletionCallback& callback);
 
   // Copy part of the backbuffer to the frontbuffer.
-  virtual bool PostSubBuffer(int x, int y, int width, int height);
+  virtual gfx::SwapResult PostSubBuffer(int x, int y, int width, int height);
 
   // Copy part of the backbuffer to the frontbuffer. On some platforms, we want
   // to send SwapBufferAck only after the surface is displayed on screen. The
@@ -204,9 +205,9 @@ class GL_EXPORT GLSurfaceAdapter : public GLSurface {
   bool Recreate() override;
   bool DeferDraws() override;
   bool IsOffscreen() override;
-  bool SwapBuffers() override;
+  gfx::SwapResult SwapBuffers() override;
   bool SwapBuffersAsync(const SwapCompletionCallback& callback) override;
-  bool PostSubBuffer(int x, int y, int width, int height) override;
+  gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override;
   bool PostSubBufferAsync(int x,
                           int y,
                           int width,