Remove obsolete getBufferSubData compatibility entry points.

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp

 // Copyright 2015 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.
 
 #include "modules/webgl/WebGL2RenderingContextBase.h"
 
 #include "bindings/modules/v8/WebGLAny.h"
 #include "core/frame/ImageBitmap.h"
 #include "core/html/HTMLCanvasElement.h"
 #include "core/html/HTMLImageElement.h"
@@ skipping 312 matching lines @@
     void* mappedData = contextGL()->MapBufferRange(target, static_cast<GLintptr>(srcByteOffset), subByteLength, GL_MAP_READ_BIT);
 
     if (!mappedData)
         return;
 
     memcpy(subBaseAddress, mappedData, subByteLength);
 
     contextGL()->UnmapBuffer(target);
 }
 
-void WebGL2RenderingContextBase::getBufferSubData(GLenum target, long long srcByteOffset, DOMArrayBuffer* dstData)
-{
-    const char* funcName = "getBufferSubData";
-    if (isContextLost())
-        return;
-
-    if (!dstData) {
-        synthesizeGLError(GL_INVALID_VALUE, funcName, "ArrayBuffer can not be null");
-        return;
-    }
-    if (!validateValueFitNonNegInt32(funcName, "srcByteOffset", srcByteOffset)) {
-        return;
-    }
-    WebGLBuffer* buffer = validateBufferDataTarget(funcName, target);
-    if (!buffer)
-        return;
-    if (srcByteOffset + dstData->byteLength() > buffer->getSize()) {
-        synthesizeGLError(GL_INVALID_VALUE, funcName, "buffer overflow");
-        return;
-    }
-
-    void* mappedData = contextGL()->MapBufferRange(target, static_cast<GLintptr>(srcByteOffset), dstData->byteLength(), GL_MAP_READ_BIT);
-    if (!mappedData)
-        return;
-    memcpy(dstData->data(), mappedData, dstData->byteLength());
-    contextGL()->UnmapBuffer(target);
-}
-
 void WebGL2RenderingContextBase::blitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter)
 {
     if (isContextLost())
         return;
 
     contextGL()->BlitFramebufferCHROMIUM(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);
 }
 
 bool WebGL2RenderingContextBase::validateTexFuncLayer(const char* functionName, GLenum texTarget, GLint layer)
 {
@@ skipping 3279 matching lines @@
     params.skipPixels = m_unpackSkipPixels;
     params.skipRows = m_unpackSkipRows;
     if (dimension == Tex3D) {
         params.imageHeight = m_unpackImageHeight;
         params.skipImages = m_unpackSkipImages;
     }
     return params;
 }
 
 } // namespace blink