Revert of Add RGB565 Texture readback support in gl_helper

content/common/gpu/client/gl_helper_benchmark.cc

 // Copyright (c) 2012 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.
 
 // This file looks like a unit test, but it contains benchmarks and test
 // utilities intended for manual evaluation of the scalers in
 // gl_helper*. These tests produce output in the form of files and printouts,
 // but cannot really "fail". There is no point in making these tests part
 // of any test automation run.
 
@@ skipping 274 matching lines @@
                       dst_size.width(),
                       dst_size.height());
       output_pixels.allocPixels();
       SkAutoLockPixels lock(output_pixels);
 
       helper_->ReadbackTextureSync(
           dst_texture,
           gfx::Rect(0, 0,
                     dst_size.width(),
                     dst_size.height()),
-          static_cast<unsigned char *>(output_pixels.getPixels()),
-          SkBitmap::kARGB_8888_Config);
+          static_cast<unsigned char *>(output_pixels.getPixels()));
       context_->deleteTexture(dst_texture);
       std::string filename = base::StringPrintf("testoutput_%s_%d.ppm",
                                                 kQualityNames[q],
                                                 percents[p]);
       VLOG(0) << "Writing " <<  filename;
       SaveToFile(&output_pixels, base::FilePath::FromUTF8Unsafe(filename));
     }
   }
   context_->deleteTexture(src_texture);
   context_->deleteFramebuffer(framebuffer);
 }
 
 }  // namespace
 
 // These tests needs to run against a proper GL environment, so we
 // need to set it up before we can run the tests.
 int main(int argc, char** argv) {
   CommandLine::Init(argc, argv);
   base::TestSuite* suite = new content::ContentTestSuite(argc, argv);
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool pool;
 #endif
 #if defined(TOOLKIT_GTK)
   gfx::GtkInitFromCommandLine(*CommandLine::ForCurrentProcess());
 #endif
   gfx::GLSurface::InitializeOneOff();
 
   return content::UnitTestTestSuite(suite).Run();
 }