Remove getError() and synthesizeGLError() from WebGraphicsContext3D.

third_party/WebKit/public/platform/WebGraphicsContext3D.h

Index: third_party/WebKit/public/platform/WebGraphicsContext3D.h
diff --git a/third_party/WebKit/public/platform/WebGraphicsContext3D.h b/third_party/WebKit/public/platform/WebGraphicsContext3D.h
index dd9a6e3197b768f6014046c2b3b50af025e94a78..4ac32597039d6bc1f61081edcc305cb380e2a91d 100644
--- a/third_party/WebKit/public/platform/WebGraphicsContext3D.h
+++ b/third_party/WebKit/public/platform/WebGraphicsContext3D.h
@@ -139,16 +139,6 @@ public:
 
     virtual bool genSyncTokenCHROMIUM(WGC3Duint64, WGC3Dbyte*) { return false; }
 
-    // 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;
 
@@ -162,7 +152,6 @@ public:
 
     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;