Revert of Adding status to swap complete

ui/gl/gl_surface_egl.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_SURFACE_EGL_H_
 #define UI_GL_GL_SURFACE_EGL_H_
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
@@ skipping 62 matching lines @@
  public:
   explicit NativeViewGLSurfaceEGL(EGLNativeWindowType window);
 
   // Implement GLSurface.
   EGLConfig GetConfig() override;
   bool Initialize() override;
   void Destroy() override;
   bool Resize(const gfx::Size& size) override;
   bool Recreate() override;
   bool IsOffscreen() override;
-  gfx::SwapResult SwapBuffers() override;
+  bool SwapBuffers() override;
   gfx::Size GetSize() override;
   EGLSurface GetHandle() override;
   bool SupportsPostSubBuffer() override;
-  gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override;
+  bool PostSubBuffer(int x, int y, int width, int height) override;
   VSyncProvider* GetVSyncProvider() override;
 
   // Create a NativeViewGLSurfaceEGL with an externally provided VSyncProvider.
   // Takes ownership of the VSyncProvider.
   virtual bool Initialize(scoped_ptr<VSyncProvider> sync_provider);
 
  protected:
   ~NativeViewGLSurfaceEGL() override;
 
   EGLNativeWindowType window_;
@@ skipping 25 matching lines @@
 // Encapsulates a pbuffer EGL surface.
 class GL_EXPORT PbufferGLSurfaceEGL : public GLSurfaceEGL {
  public:
   explicit PbufferGLSurfaceEGL(const gfx::Size& size);
 
   // Implement GLSurface.
   EGLConfig GetConfig() override;
   bool Initialize() override;
   void Destroy() override;
   bool IsOffscreen() override;
-  gfx::SwapResult SwapBuffers() override;
+  bool SwapBuffers() override;
   gfx::Size GetSize() override;
   bool Resize(const gfx::Size& size) override;
   EGLSurface GetHandle() override;
   void* GetShareHandle() override;
 
  protected:
   ~PbufferGLSurfaceEGL() override;
 
  private:
   gfx::Size size_;
   EGLSurface surface_;
 
   DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceEGL);
 };
 
 // SurfacelessEGL is used as Offscreen surface when platform supports
 // KHR_surfaceless_context and GL_OES_surfaceless_context. This would avoid the
 // need to create a dummy EGLsurface in case we render to client API targets.
 class GL_EXPORT SurfacelessEGL : public GLSurfaceEGL {
  public:
   explicit SurfacelessEGL(const gfx::Size& size);
 
   // Implement GLSurface.
   EGLConfig GetConfig() override;
   bool Initialize() override;
   void Destroy() override;
   bool IsOffscreen() override;
   bool IsSurfaceless() const override;
-  gfx::SwapResult SwapBuffers() override;
+  bool SwapBuffers() override;
   gfx::Size GetSize() override;
   bool Resize(const gfx::Size& size) override;
   EGLSurface GetHandle() override;
   void* GetShareHandle() override;
 
  protected:
   ~SurfacelessEGL() override;
 
  private:
   gfx::Size size_;
   DISALLOW_COPY_AND_ASSIGN(SurfacelessEGL);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_SURFACE_EGL_H_