Add GPUProcessManager to manage access to CompositorBridgeParent. (bug 1274149 part 1, r=mattwoodrow)

gfx/ipc/GPUProcessManager.cpp

@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=99: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "GPUProcessManager.h"
+#include "mozilla/layers/CompositorSession.h"
+#include "mozilla/StaticPtr.h"
+
+namespace mozilla {
+namespace gfx {
+
+using namespace mozilla::layers;
+
+static StaticAutoPtr<GPUProcessManager> sSingleton;
+
+GPUProcessManager*
+GPUProcessManager::Get()
+{
+  MOZ_ASSERT(sSingleton);
+  return sSingleton;
+}
+
+void
+GPUProcessManager::Initialize()
+{
+  sSingleton = new GPUProcessManager();
+}
+
+void
+GPUProcessManager::Shutdown()
+{
+  sSingleton = nullptr;
+}
+
+GPUProcessManager::GPUProcessManager()
+{
+}
+
+GPUProcessManager::~GPUProcessManager()
+{
+}
+
+already_AddRefed<CompositorSession>
+GPUProcessManager::CreateTopLevelCompositor(widget::CompositorWidgetProxy* aProxy,
+                                            ClientLayerManager* aLayerManager,
+                                            CSSToLayoutDeviceScale aScale,
+                                            bool aUseAPZ,
+                                            bool aUseExternalSurfaceSize,
+                                            int aSurfaceWidth,
+                                            int aSurfaceHeight)
+{
+  return CompositorSession::CreateInProcess(
+    aProxy,
+    aLayerManager,
+    aScale,
+    aUseAPZ,
+    aUseExternalSurfaceSize,
+    aSurfaceWidth,
+    aSurfaceHeight);
+}
+
+} // namespace gfx
+} // namespace mozilla