diff --git a/content/canvas/src/CustomQS_WebGL.h b/content/canvas/src/CustomQS_WebGL.h
index 6066919222bf..2447ae70ef94 100644
--- a/content/canvas/src/CustomQS_WebGL.h
+++ b/content/canvas/src/CustomQS_WebGL.h
@@ -259,10 +259,7 @@ nsIDOMWebGLRenderingContext_ReadPixels(JSContext *cx, uintN argc, jsval *vp)
         !JSVAL_IS_PRIMITIVE(argv[6]))
     {
         JSObject *argv6 = JSVAL_TO_OBJECT(argv[6]);
-        if (js_IsArrayBuffer(argv6)) {
-            rv = self->ReadPixels_buf(argv0, argv1, argv2, argv3,
-                                      argv4, argv5, js::ArrayBuffer::getArrayBuffer(argv6));
-        } else if (js_IsTypedArray(argv6)) {
+        if (js_IsTypedArray(argv6)) {
             rv = self->ReadPixels_array(argv0, argv1, argv2, argv3,
                                         argv4, argv5,
                                         js::TypedArray::getTypedArray(argv6));
@@ -380,15 +377,11 @@ nsIDOMWebGLRenderingContext_TexImage2D(JSContext *cx, uintN argc, jsval *vp)
 
         JSObject *argv8 = JSVAL_TO_OBJECT(argv[8]);
 
-        // then try to grab either a js::ArrayBuffer, js::TypedArray, or null
+        // then try to grab either a js::TypedArray, or null
         if (argv8 == nsnull) {
-            rv = self->TexImage2D_buf(argv0, argv1, argv2, argv3,
-                                      argv4, argv5, argv6, argv7,
-                                      nsnull);
-        } else if (js_IsArrayBuffer(argv8)) {
-            rv = self->TexImage2D_buf(argv0, argv1, argv2, argv3,
-                                      argv4, argv5, argv6, argv7,
-                                      js::ArrayBuffer::getArrayBuffer(argv8));
+            rv = self->TexImage2D_array(argv0, argv1, argv2, argv3,
+                                        argv4, argv5, argv6, argv7,
+                                        nsnull);
         } else if (js_IsTypedArray(argv8)) {
             rv = self->TexImage2D_array(argv0, argv1, argv2, argv3,
                                         argv4, argv5, argv6, argv7,
@@ -503,12 +496,8 @@ nsIDOMWebGLRenderingContext_TexSubImage2D(JSContext *cx, uintN argc, jsval *vp)
         GET_UINT32_ARG(argv7, 7);
 
         JSObject *argv8 = JSVAL_TO_OBJECT(argv[8]);
-        // try to grab either a js::ArrayBuffer or js::TypedArray
-        if (js_IsArrayBuffer(argv8)) {
-            rv = self->TexSubImage2D_buf(argv0, argv1, argv2, argv3,
-                                         argv4, argv5, argv6, argv7,
-                                         js::ArrayBuffer::getArrayBuffer(argv8));
-        } else if (js_IsTypedArray(argv8)) {
+        // try to grab a js::TypedArray
+        if (js_IsTypedArray(argv8)) {
             rv = self->TexSubImage2D_array(argv0, argv1, argv2, argv3,
                                            argv4, argv5, argv6, argv7,
                                            js::TypedArray::getTypedArray(argv8));
diff --git a/content/canvas/src/WebGLContextGL.cpp b/content/canvas/src/WebGLContextGL.cpp
index fda015fa2058..b24ce744a31d 100644
--- a/content/canvas/src/WebGLContextGL.cpp
+++ b/content/canvas/src/WebGLContextGL.cpp
@@ -3532,18 +3532,6 @@ WebGLContext::ReadPixels_array(WebGLint x, WebGLint y, WebGLsizei width, WebGLsi
                            pixels ? JS_GetTypedArrayByteLength(pixels) : 0);
 }
 
-NS_IMETHODIMP
-WebGLContext::ReadPixels_buf(WebGLint x, WebGLint y, WebGLsizei width, WebGLsizei height,
-                             WebGLenum format, WebGLenum type, JSObject *pixels)
-{
-    if (mContextLost)
-        return NS_OK;
-
-    return ReadPixels_base(x, y, width, height, format, type,
-                           pixels ? JS_GetArrayBufferData(pixels) : 0,
-                           pixels ? JS_GetArrayBufferByteLength(pixels) : 0);
-}
-
 NS_IMETHODIMP
 WebGLContext::RenderbufferStorage(WebGLenum target, WebGLenum internalformat, WebGLsizei width, WebGLsizei height)
 {
@@ -4910,22 +4898,6 @@ WebGLContext::TexImage2D_base(WebGLenum target, WebGLint level, WebGLenum intern
     return NS_OK;
 }
 
-NS_IMETHODIMP
-WebGLContext::TexImage2D_buf(WebGLenum target, WebGLint level, WebGLenum internalformat,
-                             WebGLsizei width, WebGLsizei height, WebGLint border,
-                             WebGLenum format, WebGLenum type,
-                             JSObject *pixels)
-{
-    if (mContextLost)
-        return NS_OK;
-
-    return TexImage2D_base(target, level, internalformat, width, height, 0, border, format, type,
-                           pixels ? JS_GetArrayBufferData(pixels) : 0,
-                           pixels ? JS_GetArrayBufferByteLength(pixels) : 0,
-                           -1,
-                           WebGLTexelFormat::Auto, false);
-}
-
 NS_IMETHODIMP
 WebGLContext::TexImage2D_array(WebGLenum target, WebGLint level, WebGLenum internalformat,
                                WebGLsizei width, WebGLsizei height, WebGLint border,
@@ -4938,7 +4910,7 @@ WebGLContext::TexImage2D_array(WebGLenum target, WebGLint level, WebGLenum inter
     return TexImage2D_base(target, level, internalformat, width, height, 0, border, format, type,
                            pixels ? JS_GetTypedArrayData(pixels) : 0,
                            pixels ? JS_GetTypedArrayByteLength(pixels) : 0,
-                           (int) JS_GetTypedArrayType(pixels),
+                           pixels ? (int)JS_GetTypedArrayType(pixels) : -1,
                            WebGLTexelFormat::Auto, false);
 }
 
@@ -5106,26 +5078,6 @@ WebGLContext::TexSubImage2D_base(WebGLenum target, WebGLint level,
     return NS_OK;
 }
 
-NS_IMETHODIMP
-WebGLContext::TexSubImage2D_buf(WebGLenum target, WebGLint level,
-                                WebGLint xoffset, WebGLint yoffset,
-                                WebGLsizei width, WebGLsizei height,
-                                WebGLenum format, WebGLenum type,
-                                JSObject *pixels)
-{
-    if (mContextLost)
-        return NS_OK;
-
-    if (!pixels)
-        return ErrorInvalidValue("TexSubImage2D: pixels must not be null!");
-
-    return TexSubImage2D_base(target, level, xoffset, yoffset,
-                              width, height, 0, format, type,
-                              JS_GetArrayBufferData(pixels), JS_GetArrayBufferByteLength(pixels),
-                              -1,
-                              WebGLTexelFormat::Auto, false);
-}
-
 NS_IMETHODIMP
 WebGLContext::TexSubImage2D_array(WebGLenum target, WebGLint level,
                                   WebGLint xoffset, WebGLint yoffset,
diff --git a/dom/interfaces/canvas/nsIDOMWebGLRenderingContext.idl b/dom/interfaces/canvas/nsIDOMWebGLRenderingContext.idl
index 7962227f2695..dfaedd91c210 100644
--- a/dom/interfaces/canvas/nsIDOMWebGLRenderingContext.idl
+++ b/dom/interfaces/canvas/nsIDOMWebGLRenderingContext.idl
@@ -735,8 +735,6 @@ interface nsIDOMWebGLRenderingContext : nsISupports
   void readPixels([optional] in long dummy);
   [noscript] void readPixels_array(in WebGLint x, in WebGLint y, in WebGLsizei width, in WebGLsizei height,
                                    in WebGLenum format, in WebGLenum type, in WebGLJSObjectPtr pixels);
-  [noscript] void readPixels_buf(in WebGLint x, in WebGLint y, in WebGLsizei width, in WebGLsizei height,
-                                 in WebGLenum format, in WebGLenum type, in WebGLJSObjectPtr pixels);
 
   //void glReleaseShaderCompiler();
 
@@ -755,9 +753,6 @@ interface nsIDOMWebGLRenderingContext : nsISupports
   void stencilOpSeparate(in WebGLenum face, in WebGLenum fail, in WebGLenum zfail, in WebGLenum zpass);
 
   void texImage2D([optional] in long dummy);
-  [noscript] void texImage2D_buf(in WebGLenum target, in WebGLint level, in WebGLenum internalformat,
-                                 in WebGLsizei width, in WebGLsizei height,
-                                 in WebGLint border, in WebGLenum format, in WebGLenum type, in WebGLJSObjectPtr pixels);
   [noscript] void texImage2D_array(in WebGLenum target, in WebGLint level, in WebGLenum internalformat,
                                    in WebGLsizei width, in WebGLsizei height,
                                    in WebGLint border, in WebGLenum format, in WebGLenum type, in WebGLJSObjectPtr pixels);
@@ -770,9 +765,6 @@ interface nsIDOMWebGLRenderingContext : nsISupports
                                  in WebGLenum format, in WebGLenum type, in nsIDOMElement element);
 
   void texSubImage2D([optional] in long dummy);
-  [noscript] void texSubImage2D_buf(in WebGLenum target, in WebGLint level,
-                                    in WebGLint xoffset, in WebGLint yoffset, in WebGLsizei width, in WebGLsizei height,
-                                    in WebGLenum format, in WebGLenum type, in WebGLJSObjectPtr pixels);
   [noscript] void texSubImage2D_array(in WebGLenum target, in WebGLint level,
                                       in WebGLint xoffset, in WebGLint yoffset, in WebGLsizei width, in WebGLsizei height,
                                       in WebGLenum format, in WebGLenum type, in WebGLJSObjectPtr pixels);