Enable CopyTextureCHROMIUM in Blink for Tex{Sub}Image2D with more cases

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 616 matching lines @@
   }
   return true;
 }
 
 IntRect WebGL2RenderingContextBase::GetTextureSourceSubRectangle(
     GLsizei width,
     GLsizei height) {
   return IntRect(unpack_skip_pixels_, unpack_skip_rows_, width, height);
 }
 
-bool WebGL2RenderingContextBase::CanUseTexImageByGPU(
-    TexImageFunctionID function_id,
-    GLint internalformat,
-    GLenum type) {
-  switch (internalformat) {
-    case GL_RGB565:
-    case GL_RGBA4:
-    case GL_RGB5_A1:
-      // FIXME: ES3 limitation that CopyTexImage with sized internalformat,
-      // component sizes have to match the source color format.
-      return false;
-    default:
-      break;
-  }
-  return WebGLRenderingContextBase::CanUseTexImageByGPU(function_id,
-                                                        internalformat, type);
-}
-
 void WebGL2RenderingContextBase::invalidateFramebuffer(
     GLenum target,
     const Vector<GLenum>& attachments) {
   if (isContextLost())
     return;
 
   Vector<GLenum> translated_attachments = attachments;
   if (!CheckAndTranslateAttachments("invalidateFramebuffer", target,
                                     translated_attachments))
     return;
@@ skipping 5028 matching lines @@
 
 void WebGL2RenderingContextBase::
     DrawingBufferClientRestorePixelUnpackBufferBinding() {
   if (!ContextGL())
     return;
   ContextGL()->BindBuffer(GL_PIXEL_UNPACK_BUFFER,
                           ObjectOrZero(bound_pixel_unpack_buffer_.Get()));
 }
 
 }  // namespace blink