Remove windows/mac/ios specific code from //ui

ui/gl/gl_implementation_win.cc

Index: ui/gl/gl_implementation_win.cc
diff --git a/ui/gl/gl_implementation_win.cc b/ui/gl/gl_implementation_win.cc
deleted file mode 100644
index 49ffa891e32d188bf5e191e367e6072ae2fc69e6..0000000000000000000000000000000000000000
--- a/ui/gl/gl_implementation_win.cc
+++ /dev/null
@@ -1,402 +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/at_exit.h"
-#include "base/base_paths.h"
-#include "base/bind.h"
-#include "base/command_line.h"
-#include "base/files/file_path.h"
-#include "base/lazy_instance.h"
-#include "base/logging.h"
-#include "base/native_library.h"
-#include "base/path_service.h"
-#include "base/strings/stringprintf.h"
-#include "base/threading/thread_restrictions.h"
-#include "base/trace_event/trace_event.h"
-#include "base/win/windows_version.h"
-// TODO(jmadill): Apply to all platforms eventually
-#include "ui/gl/angle_platform_impl.h"
-#include "ui/gl/gl_bindings.h"
-#include "ui/gl/gl_context_stub_with_extensions.h"
-#include "ui/gl/gl_egl_api_implementation.h"
-#include "ui/gl/gl_gl_api_implementation.h"
-#include "ui/gl/gl_implementation.h"
-#include "ui/gl/gl_osmesa_api_implementation.h"
-#include "ui/gl/gl_surface_wgl.h"
-#include "ui/gl/gl_wgl_api_implementation.h"
-
-#if defined(ENABLE_SWIFTSHADER)
-#include "software_renderer.h"
-#endif
-
-namespace gfx {
-
-namespace {
-
-const wchar_t kD3DCompiler[] = L"D3DCompiler_47.dll";
-
-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));
-}
-
-bool LoadD3DXLibrary(const base::FilePath& module_path,
-                     const base::FilePath::StringType& name) {
-  base::NativeLibrary library =
-      base::LoadNativeLibrary(base::FilePath(name), NULL);
-  if (!library) {
-    library = base::LoadNativeLibrary(module_path.Append(name), NULL);
-    if (!library) {
-      DVLOG(1) << name << " not found.";
-      return false;
-    }
-  }
-  return true;
-}
-
-const unsigned char* AngleGetTraceCategoryEnabledFlag(const char* name) {
-  return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(name);
-}
-
-void AngleAddTraceEvent(char phase,
-                        const unsigned char* category_group_enabled,
-                        const char* name,
-                        unsigned long long id,
-                        int num_args,
-                        const char** arg_names,
-                        const unsigned char* arg_types,
-                        const unsigned long long* arg_values,
-                        unsigned char flags) {
-  TRACE_EVENT_API_ADD_TRACE_EVENT(phase,
-                                  category_group_enabled,
-                                  name,
-                                  id,
-                                  num_args,
-                                  arg_names,
-                                  arg_types,
-                                  arg_values,
-                                  NULL,
-                                  flags);
-}
-
-typedef const unsigned char* (*GetCategoryEnabledFlagFunc)(const char* name);
-typedef void (*AddTraceEventFunc)(char phase,
-                                  const unsigned char* categoryGroupEnabled,
-                                  const char* name,
-                                  unsigned long long id,
-                                  int numArgs,
-                                  const char** argNames,
-                                  const unsigned char* argTypes,
-                                  const unsigned long long* argValues,
-                                  unsigned char flags);
-typedef void (__stdcall *SetTraceFunctionPointersFunc)(
-    GetCategoryEnabledFlagFunc get_category_enabled_flag,
-    AddTraceEventFunc add_trace_event_func);
-
-// TODO(jmadill): Apply to all platforms eventually
-base::LazyInstance<ANGLEPlatformImpl> g_angle_platform_impl =
-    LAZY_INSTANCE_INITIALIZER;
-
-ANGLEPlatformShutdownFunc g_angle_platform_shutdown = nullptr;
-
-}  // namespace
-
-void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) {
-  impls->push_back(kGLImplementationEGLGLES2);
-  impls->push_back(kGLImplementationDesktopGL);
-  impls->push_back(kGLImplementationOSMesaGL);
-}
-
-bool InitializeStaticGLBindings(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.
-  DCHECK_EQ(kGLImplementationNone, GetGLImplementation());
-
-  // 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 = base::LoadNativeLibrary(
-          module_path.Append(L"osmesa.dll"), NULL);
-      if (!library) {
-        DVLOG(1) << "osmesa.dll not found";
-        return false;
-      }
-
-      GLGetProcAddressProc get_proc_address =
-          reinterpret_cast<GLGetProcAddressProc>(
-              base::GetFunctionPointerFromNativeLibrary(
-                  library, "OSMesaGetProcAddress"));
-      if (!get_proc_address) {
-        DLOG(ERROR) << "OSMesaGetProcAddress not found.";
-        base::UnloadNativeLibrary(library);
-        return false;
-      }
-
-      SetGLGetProcAddressProc(get_proc_address);
-      AddGLNativeLibrary(library);
-      SetGLImplementation(kGLImplementationOSMesaGL);
-
-      InitializeStaticGLBindingsGL();
-      InitializeStaticGLBindingsOSMESA();
-      break;
-    }
-    case kGLImplementationEGLGLES2: {
-      base::FilePath module_path;
-      if (!PathService::Get(base::DIR_MODULE, &module_path))
-        return false;
-
-      // Attempt to load the D3DX shader compiler using the default search path
-      // and if that fails, using an absolute path. This is to ensure these DLLs
-      // are loaded before ANGLE is loaded in case they are not in the default
-      // search path.
-      LoadD3DXLibrary(module_path, kD3DCompiler);
-
-      base::FilePath gles_path;
-      const base::CommandLine* command_line =
-          base::CommandLine::ForCurrentProcess();
-      bool using_swift_shader =
-          command_line->GetSwitchValueASCII(switches::kUseGL) == "swiftshader";
-      if (using_swift_shader) {
-        if (!command_line->HasSwitch(switches::kSwiftShaderPath))
-          return false;
-        gles_path =
-            command_line->GetSwitchValuePath(switches::kSwiftShaderPath);
-        // Preload library
-        LoadLibrary(L"ddraw.dll");
-      } else {
-        gles_path = module_path;
-      }
-
-      // Load libglesv2.dll before libegl.dll because the latter is dependent on
-      // the former and if there is another version of libglesv2.dll in the dll
-      // search path, it will get loaded instead.
-      base::NativeLibrary gles_library = base::LoadNativeLibrary(
-          gles_path.Append(L"libglesv2.dll"), NULL);
-      if (!gles_library) {
-        DVLOG(1) << "libglesv2.dll not found";
-        return false;
-      }
-
-      // When using EGL, first try eglGetProcAddress and then Windows
-      // GetProcAddress on both the EGL and GLES2 DLLs.
-      base::NativeLibrary egl_library = base::LoadNativeLibrary(
-          gles_path.Append(L"libegl.dll"), NULL);
-      if (!egl_library) {
-        DVLOG(1) << "libegl.dll not found.";
-        base::UnloadNativeLibrary(gles_library);
-        return false;
-      }
-
-#if defined(ENABLE_SWIFTSHADER)
-      if (using_swift_shader) {
-        SetupSoftwareRenderer(gles_library);
-      }
-#endif
-
-      if (!using_swift_shader) {
-        // TODO(jmadill): remove when platform impl supports tracing
-        SetTraceFunctionPointersFunc set_trace_function_pointers =
-            reinterpret_cast<SetTraceFunctionPointersFunc>(
-                base::GetFunctionPointerFromNativeLibrary(
-                    gles_library, "SetTraceFunctionPointers"));
-        if (set_trace_function_pointers) {
-          set_trace_function_pointers(&AngleGetTraceCategoryEnabledFlag,
-                                      &AngleAddTraceEvent);
-        }
-
-        // Init ANGLE platform here, before we call GetPlatformDisplay().
-        // TODO(jmadill): Apply to all platforms eventually
-        ANGLEPlatformInitializeFunc angle_platform_init =
-            reinterpret_cast<ANGLEPlatformInitializeFunc>(
-                base::GetFunctionPointerFromNativeLibrary(
-                    gles_library,
-                    "ANGLEPlatformInitialize"));
-        if (angle_platform_init) {
-          angle_platform_init(&g_angle_platform_impl.Get());
-
-          g_angle_platform_shutdown =
-              reinterpret_cast<ANGLEPlatformShutdownFunc>(
-                  base::GetFunctionPointerFromNativeLibrary(
-                      gles_library,
-                      "ANGLEPlatformShutdown"));
-        }
-      }
-
-      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);
-
-      InitializeStaticGLBindingsGL();
-      InitializeStaticGLBindingsEGL();
-
-      // 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 kGLImplementationDesktopGL: {
-      base::NativeLibrary library = base::LoadNativeLibrary(
-          base::FilePath(L"opengl32.dll"), NULL);
-      if (!library) {
-        DVLOG(1) << "opengl32.dll not found";
-        return false;
-      }
-
-      GLGetProcAddressProc get_proc_address =
-          reinterpret_cast<GLGetProcAddressProc>(
-              base::GetFunctionPointerFromNativeLibrary(
-                  library, "wglGetProcAddress"));
-      if (!get_proc_address) {
-        LOG(ERROR) << "wglGetProcAddress not found.";
-        base::UnloadNativeLibrary(library);
-        return false;
-      }
-
-      SetGLGetProcAddressProc(get_proc_address);
-      AddGLNativeLibrary(library);
-      SetGLImplementation(kGLImplementationDesktopGL);
-
-      // Initialize GL surface and get some functions needed for the context
-      // creation below.
-      if (!GLSurfaceWGL::InitializeOneOff()) {
-        LOG(ERROR) << "GLSurfaceWGL::InitializeOneOff failed.";
-        return false;
-      }
-      wglCreateContextProc wglCreateContextFn =
-          reinterpret_cast<wglCreateContextProc>(
-              GetGLProcAddress("wglCreateContext"));
-      wglDeleteContextProc wglDeleteContextFn =
-          reinterpret_cast<wglDeleteContextProc>(
-              GetGLProcAddress("wglDeleteContext"));
-      wglMakeCurrentProc wglMakeCurrentFn =
-          reinterpret_cast<wglMakeCurrentProc>(
-              GetGLProcAddress("wglMakeCurrent"));
-
-      // Create a temporary GL context to bind to entry points. This is needed
-      // because wglGetProcAddress is specified to return NULL for all queries
-      // if a context is not current in MSDN documentation, and the static
-      // bindings may contain functions that need to be queried with
-      // wglGetProcAddress. OpenGL wiki further warns that other error values
-      // than NULL could also be returned from wglGetProcAddress on some
-      // implementations, so we need to clear the WGL bindings and reinitialize
-      // them after the context creation.
-      HGLRC gl_context = wglCreateContextFn(GLSurfaceWGL::GetDisplayDC());
-      if (!gl_context) {
-        LOG(ERROR) << "Failed to create temporary context.";
-        return false;
-      }
-      if (!wglMakeCurrentFn(GLSurfaceWGL::GetDisplayDC(), gl_context)) {
-        LOG(ERROR) << "Failed to make temporary GL context current.";
-        wglDeleteContextFn(gl_context);
-        return false;
-      }
-
-      InitializeStaticGLBindingsGL();
-      InitializeStaticGLBindingsWGL();
-
-      wglMakeCurrent(NULL, NULL);
-      wglDeleteContext(gl_context);
-
-      break;
-    }
-    case kGLImplementationMockGL: {
-      SetGLImplementation(kGLImplementationMockGL);
-      InitializeStaticGLBindingsGL();
-      break;
-    }
-    default:
-      return false;
-  }
-
-  return true;
-}
-
-bool InitializeDynamicGLBindings(GLImplementation implementation,
-    GLContext* context) {
-  switch (implementation) {
-    case kGLImplementationOSMesaGL:
-    case kGLImplementationEGLGLES2:
-    case kGLImplementationDesktopGL:
-      InitializeDynamicGLBindingsGL(context);
-      break;
-    case kGLImplementationMockGL:
-      if (!context) {
-        scoped_refptr<GLContextStubWithExtensions> mock_context(
-            new GLContextStubWithExtensions());
-        mock_context->SetGLVersionString("3.0");
-        InitializeDynamicGLBindingsGL(mock_context.get());
-      } else
-        InitializeDynamicGLBindingsGL(context);
-      break;
-    default:
-      return false;
-  }
-
-  return true;
-}
-
-void InitializeDebugGLBindings() {
-  InitializeDebugGLBindingsEGL();
-  InitializeDebugGLBindingsGL();
-  InitializeDebugGLBindingsOSMESA();
-  InitializeDebugGLBindingsWGL();
-}
-
-void ClearGLBindings() {
-  // TODO(jmadill): Apply to all platforms eventually
-  if (g_angle_platform_shutdown) {
-    g_angle_platform_shutdown();
-  }
-
-  ClearGLBindingsEGL();
-  ClearGLBindingsGL();
-  ClearGLBindingsOSMESA();
-  ClearGLBindingsWGL();
-  SetGLImplementation(kGLImplementationNone);
-  UnloadGLNativeLibraries();
-}
-
-bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) {
-  switch (GetGLImplementation()) {
-    case kGLImplementationDesktopGL:
-      return GetGLWindowSystemBindingInfoWGL(info);
-    case kGLImplementationEGLGLES2:
-      return GetGLWindowSystemBindingInfoEGL(info);
-    default:
-      return false;
-  }
-}
-
-}  // namespace gfx