Remove some unneeded DEPS from //sky

sky/engine/platform/graphics/gpu/Extensions3DUtil.cpp

-// Copyright 2014 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 "sky/engine/platform/graphics/gpu/Extensions3DUtil.h"
-
-#include "sky/engine/public/platform/WebGraphicsContext3D.h"
-#include "sky/engine/wtf/PassOwnPtr.h"
-#include "sky/engine/wtf/text/CString.h"
-#include "sky/engine/wtf/text/StringHash.h"
-
-namespace blink {
-
-namespace {
-
-void splitStringHelper(const String& str, HashSet<String>& set)
-{
-    Vector<String> substrings;
-    str.split(' ', substrings);
-    for (size_t i = 0; i < substrings.size(); ++i)
-        set.add(substrings[i]);
-}
-
-} // anonymous namespace
-
-PassOwnPtr<Extensions3DUtil> Extensions3DUtil::create(WebGraphicsContext3D* context)
-{
-    OwnPtr<Extensions3DUtil> out = adoptPtr(new Extensions3DUtil(context));
-    if (!out->initializeExtensions())
-        return nullptr;
-    return out.release();
-}
-
-Extensions3DUtil::Extensions3DUtil(WebGraphicsContext3D* context)
-    : m_context(context)
-{
-}
-
-Extensions3DUtil::~Extensions3DUtil()
-{
-}
-
-bool Extensions3DUtil::initializeExtensions()
-{
-    if (m_context->isContextLost()) {
-        // Need to try to restore the context again later.
-        return false;
-    }
-
-    String extensionsString = m_context->getString(GL_EXTENSIONS);
-    splitStringHelper(extensionsString, m_enabledExtensions);
-
-    String requestableExtensionsString = m_context->getRequestableExtensionsCHROMIUM();
-    splitStringHelper(requestableExtensionsString, m_requestableExtensions);
-
-    return true;
-}
-
-
-bool Extensions3DUtil::supportsExtension(const String& name)
-{
-    return m_enabledExtensions.contains(name) || m_requestableExtensions.contains(name);
-}
-
-bool Extensions3DUtil::ensureExtensionEnabled(const String& name)
-{
-    if (m_enabledExtensions.contains(name))
-        return true;
-
-    if (m_requestableExtensions.contains(name)) {
-        m_context->requestExtensionCHROMIUM(name.ascii().data());
-        m_enabledExtensions.clear();
-        m_requestableExtensions.clear();
-        initializeExtensions();
-    }
-    return m_enabledExtensions.contains(name);
-}
-
-bool Extensions3DUtil::isExtensionEnabled(const String& name)
-{
-    return m_enabledExtensions.contains(name);
-}
-
-bool Extensions3DUtil::canUseCopyTextureCHROMIUM(GLenum destFormat, GLenum destType, GLint level)
-{
-    // FIXME: restriction of (RGB || RGBA)/UNSIGNED_BYTE/(Level 0) should be lifted when
-    // WebGraphicsContext3D::copyTextureCHROMIUM(...) are fully functional.
-    if ((destFormat == GL_RGB || destFormat == GL_RGBA)
-        && destType == GL_UNSIGNED_BYTE
-        && !level)
-        return true;
-    return false;
-}
-
-} // namespace blink