Remove getError() and synthesizeGLError() from WebGraphicsContext3D.

third_party/WebKit/public/platform/WebGraphicsContext3D.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 119 matching lines @@
     public:
         virtual void onErrorMessage(const WebString&, WGC3Dint) = 0;
 
     protected:
         virtual ~WebGraphicsErrorMessageCallback() { }
     };
 
     // This destructor needs to be public so that using classes can destroy instances if initialization fails.
     virtual ~WebGraphicsContext3D() { }
 
-    // Synthesizes an OpenGL error which will be returned from a
-    // later call to getError. This is used to emulate OpenGL ES
-    // 2.0 behavior on the desktop and to enforce additional error
-    // checking mandated by WebGL.
-    //
-    // Per the behavior of glGetError, this stores at most one
-    // instance of any given error, and returns them from calls to
-    // getError in the order they were added.
-    virtual void synthesizeGLError(WGC3Denum) = 0;
-
     // GL_CHROMIUM_request_extension
     virtual WebString getRequestableExtensionsCHROMIUM() = 0;
 
     // GL_CHROMIUM_framebuffer_multisample
     virtual void blitFramebufferCHROMIUM(WGC3Dint srcX0, WGC3Dint srcY0, WGC3Dint srcX1, WGC3Dint srcY1, WGC3Dint dstX0, WGC3Dint dstY0, WGC3Dint dstX1, WGC3Dint dstY1, WGC3Dbitfield mask, WGC3Denum filter) = 0;
 
     // The entry points below map directly to the OpenGL ES 2.0 API.
     // See: http://www.khronos.org/registry/gles/
     // and: http://www.khronos.org/opengles/sdk/docs/man/
     virtual void drawElements(WGC3Denum mode, WGC3Dsizei count, WGC3Denum type, WGC3Dintptr offset) = 0;
 
     virtual bool getActiveAttrib(WebGLId program, WGC3Duint index, ActiveInfo&) = 0;
     virtual bool getActiveUniform(WebGLId program, WGC3Duint index, ActiveInfo&) = 0;
-    virtual WGC3Denum getError() = 0;
     virtual WebString getProgramInfoLog(WebGLId program) = 0;
     virtual WebString getShaderInfoLog(WebGLId shader) = 0;
     virtual WebString getShaderSource(WebGLId shader) = 0;
     virtual WebString getString(WGC3Denum name) = 0;
     virtual WGC3Dintptr getVertexAttribOffset(WGC3Duint index, WGC3Denum pname) = 0;
 
     virtual void shaderSource(WebGLId shader, const WGC3Dchar* string) = 0;
 
     virtual void vertexAttribPointer(WGC3Duint index, WGC3Dint size, WGC3Denum type, WGC3Dboolean normalized,
                                      WGC3Dsizei stride, WGC3Dintptr offset) = 0;
@@ skipping 84 matching lines @@
     virtual void vertexAttribIPointer(WGC3Duint index, WGC3Dint size, WGC3Denum type, WGC3Dsizei stride, WGC3Dintptr pointer) { }
     virtual void waitSync(WGC3Dsync sync, WGC3Dbitfield flags, WGC3Duint64 timeout) { }
 
     // Prefer getting a GLES2Interface off WebGraphicsContext3DProvider if possible, and avoid using WebGraphicsContext3D at all.
     virtual gpu::gles2::GLES2Interface* getGLES2Interface() = 0;
 };
 
 } // namespace blink
 
 #endif