Rationalize linux vs x11 in ui

ui/gl/gl_implementation_linux.cc

Index: ui/gl/gl_implementation_linux.cc
diff --git a/ui/gl/gl_implementation_linux.cc b/ui/gl/gl_implementation_linux.cc
deleted file mode 100644
index 2da82547a097ed21f9fefc2967c020c1da8150a3..0000000000000000000000000000000000000000
--- a/ui/gl/gl_implementation_linux.cc
+++ /dev/null
@@ -1,232 +0,0 @@
-// 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.
-
-#include <vector>
-
-#include "base/base_paths.h"
-#include "base/command_line.h"
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/native_library.h"
-#include "base/path_service.h"
-#include "base/threading/thread_restrictions.h"
-#include "ui/gl/gl_bindings.h"
-#include "ui/gl/gl_egl_api_implementation.h"
-#include "ui/gl/gl_gl_api_implementation.h"
-#include "ui/gl/gl_glx_api_implementation.h"
-#include "ui/gl/gl_implementation.h"
-#include "ui/gl/gl_osmesa_api_implementation.h"
-#include "ui/gl/gl_switches.h"
-
-namespace gfx {
-namespace {
-
-// TODO(piman): it should be Desktop GL marshalling from double to float. Today
-// on native GLES, we do float->double->float.
-void GL_BINDING_CALL MarshalClearDepthToClearDepthf(GLclampd depth) {
-  glClearDepthf(static_cast<GLclampf>(depth));
-}
-
-void GL_BINDING_CALL MarshalDepthRangeToDepthRangef(GLclampd z_near,
-                                                    GLclampd z_far) {
-  glDepthRangef(static_cast<GLclampf>(z_near), static_cast<GLclampf>(z_far));
-}
-
-// Load a library, printing an error message on failure.
-base::NativeLibrary LoadLibrary(const base::FilePath& filename) {
-  std::string error;
-  base::NativeLibrary library = base::LoadNativeLibrary(filename,
-                                                        &error);
-  if (!library) {
-    DVLOG(1) << "Failed to load " << filename.MaybeAsASCII() << ": " << error;
-    return NULL;
-  }
-  return library;
-}
-
-base::NativeLibrary LoadLibrary(const char* filename) {
-  return LoadLibrary(base::FilePath(filename));
-}
-
-}  // namespace
-
-void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) {
-  impls->push_back(kGLImplementationDesktopGL);
-  impls->push_back(kGLImplementationEGLGLES2);
-  impls->push_back(kGLImplementationOSMesaGL);
-}
-
-bool InitializeGLBindings(GLImplementation implementation) {
-  // Prevent reinitialization with a different implementation. Once the gpu
-  // unit tests have initialized with kGLImplementationMock, we don't want to
-  // later switch to another GL implementation.
-  if (GetGLImplementation() != kGLImplementationNone)
-    return true;
-
-  // Allow the main thread or another to initialize these bindings
-  // after instituting restrictions on I/O. Going forward they will
-  // likely be used in the browser process on most platforms. The
-  // one-time initialization cost is small, between 2 and 5 ms.
-  base::ThreadRestrictions::ScopedAllowIO allow_io;
-
-  switch (implementation) {
-    case kGLImplementationOSMesaGL: {
-      base::FilePath module_path;
-      if (!PathService::Get(base::DIR_MODULE, &module_path)) {
-        LOG(ERROR) << "PathService::Get failed.";
-        return false;
-      }
-
-      base::NativeLibrary library = LoadLibrary(
-          module_path.Append("libosmesa.so"));
-      if (!library)
-        return false;
-
-      GLGetProcAddressProc get_proc_address =
-          reinterpret_cast<GLGetProcAddressProc>(
-              base::GetFunctionPointerFromNativeLibrary(
-                  library, "OSMesaGetProcAddress"));
-      if (!get_proc_address) {
-        LOG(ERROR) << "OSMesaGetProcAddress not found.";
-        base::UnloadNativeLibrary(library);
-        return false;
-      }
-
-      SetGLGetProcAddressProc(get_proc_address);
-      AddGLNativeLibrary(library);
-      SetGLImplementation(kGLImplementationOSMesaGL);
-
-      InitializeGLBindingsGL();
-      InitializeGLBindingsOSMESA();
-      break;
-    }
-    case kGLImplementationDesktopGL: {
-      base::NativeLibrary library = NULL;
-      const CommandLine* command_line = CommandLine::ForCurrentProcess();
-
-      if (command_line->HasSwitch(switches::kTestGLLib))
-        library = LoadLibrary(command_line->GetSwitchValueASCII(
-            switches::kTestGLLib).c_str());
-
-      if (!library) {
-#if defined(OS_OPENBSD)
-        library = LoadLibrary("libGL.so");
-#else
-        library = LoadLibrary("libGL.so.1");
-#endif
-      }
-
-      if (!library)
-        return false;
-
-      GLGetProcAddressProc get_proc_address =
-          reinterpret_cast<GLGetProcAddressProc>(
-              base::GetFunctionPointerFromNativeLibrary(
-                  library, "glXGetProcAddress"));
-      if (!get_proc_address) {
-        LOG(ERROR) << "glxGetProcAddress not found.";
-        base::UnloadNativeLibrary(library);
-        return false;
-      }
-
-      SetGLGetProcAddressProc(get_proc_address);
-      AddGLNativeLibrary(library);
-      SetGLImplementation(kGLImplementationDesktopGL);
-
-      InitializeGLBindingsGL();
-      InitializeGLBindingsGLX();
-      break;
-    }
-    case kGLImplementationEGLGLES2: {
-      base::NativeLibrary gles_library = LoadLibrary("libGLESv2.so.2");
-      if (!gles_library)
-        return false;
-      base::NativeLibrary egl_library = LoadLibrary("libEGL.so.1");
-      if (!egl_library) {
-        base::UnloadNativeLibrary(gles_library);
-        return false;
-      }
-
-      GLGetProcAddressProc get_proc_address =
-          reinterpret_cast<GLGetProcAddressProc>(
-              base::GetFunctionPointerFromNativeLibrary(
-                  egl_library, "eglGetProcAddress"));
-      if (!get_proc_address) {
-        LOG(ERROR) << "eglGetProcAddress not found.";
-        base::UnloadNativeLibrary(egl_library);
-        base::UnloadNativeLibrary(gles_library);
-        return false;
-      }
-
-      SetGLGetProcAddressProc(get_proc_address);
-      AddGLNativeLibrary(egl_library);
-      AddGLNativeLibrary(gles_library);
-      SetGLImplementation(kGLImplementationEGLGLES2);
-
-      InitializeGLBindingsGL();
-      InitializeGLBindingsEGL();
-
-      // These two functions take single precision float rather than double
-      // precision float parameters in GLES.
-      ::gfx::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf;
-      ::gfx::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef;
-      break;
-    }
-    case kGLImplementationMockGL: {
-      SetGLGetProcAddressProc(GetMockGLProcAddress);
-      SetGLImplementation(kGLImplementationMockGL);
-      InitializeGLBindingsGL();
-      break;
-    }
-    default:
-      return false;
-  }
-
-
-  return true;
-}
-
-bool InitializeGLExtensionBindings(GLImplementation implementation,
-    GLContext* context) {
-  switch (implementation) {
-    case kGLImplementationOSMesaGL:
-      InitializeGLExtensionBindingsGL(context);
-      InitializeGLExtensionBindingsOSMESA(context);
-      break;
-    case kGLImplementationDesktopGL:
-      InitializeGLExtensionBindingsGL(context);
-      InitializeGLExtensionBindingsGLX(context);
-      break;
-    case kGLImplementationEGLGLES2:
-      InitializeGLExtensionBindingsGL(context);
-      InitializeGLExtensionBindingsEGL(context);
-      break;
-    case kGLImplementationMockGL:
-      InitializeGLExtensionBindingsGL(context);
-      break;
-    default:
-      return false;
-  }
-
-  return true;
-}
-
-void InitializeDebugGLBindings() {
-  InitializeDebugGLBindingsEGL();
-  InitializeDebugGLBindingsGL();
-  InitializeDebugGLBindingsGLX();
-  InitializeDebugGLBindingsOSMESA();
-}
-
-void ClearGLBindings() {
-  ClearGLBindingsEGL();
-  ClearGLBindingsGL();
-  ClearGLBindingsGLX();
-  ClearGLBindingsOSMESA();
-  SetGLImplementation(kGLImplementationNone);
-
-  UnloadGLNativeLibraries();
-}
-
-}  // namespace gfx