Use nested namespaces in UIManager module

Summary:
Changelog: [internal]

Use nested namespaces in UIManager module.

Reviewed By: JoshuaGross

Differential Revision: D27462611

fbshipit-source-id: 626510bf72a18303de55e5db3e13db4f415d799e

ReactCommon/react/renderer/uimanager/LayoutAnimationStatusDelegate.h

@@ -7,8 +7,7 @@
 
 #pragma once
 
-namespace facebook {
-namespace react {
+namespace facebook::react {
 
 class LayoutAnimationStatusDelegate {
  public:
@@ -26,5 +25,4 @@ class LayoutAnimationStatusDelegate {
   virtual void onAllAnimationsComplete() = 0;
 };
 
-} // namespace react
-} // namespace facebook
+} // namespace facebook::react

ReactCommon/react/renderer/uimanager/UIManager.cpp

@@ -16,8 +16,7 @@
 
 #include <glog/logging.h>
 
-namespace facebook {
-namespace react {
+namespace facebook::react {
 
 static std::unique_ptr<LeakChecker> constructLeakChecker(
     RuntimeExecutor const &runtimeExecutor,
@@ -433,5 +432,4 @@ void UIManager::animationTick() {
   }
 }
 
-} // namespace react
-} // namespace facebook
+} // namespace facebook::react

ReactCommon/react/renderer/uimanager/UIManager.h

@@ -24,8 +24,7 @@
 #include <react/renderer/uimanager/UIManagerDelegate.h>
 #include <react/renderer/uimanager/primitives.h>
 
-namespace facebook {
-namespace react {
+namespace facebook::react {
 
 class UIManagerBinding;
 class UIManagerCommitHook;
@@ -194,5 +193,4 @@ class UIManager final : public ShadowTreeDelegate {
   std::unique_ptr<LeakChecker> leakChecker_;
 };
 
-} // namespace react
-} // namespace facebook
+} // namespace facebook::react

ReactCommon/react/renderer/uimanager/UIManagerAnimationDelegate.h

@@ -12,8 +12,7 @@
 #include <react/renderer/componentregistry/ComponentDescriptorFactory.h>
 #include <react/renderer/core/RawValue.h>
 
-namespace facebook {
-namespace react {
+namespace facebook::react {
 
 class UIManagerAnimationDelegate {
  public:
@@ -48,5 +47,4 @@ class UIManagerAnimationDelegate {
   virtual void stopSurface(SurfaceId surfaceId) = 0;
 };
 
-} // namespace react
-} // namespace facebook
+} // namespace facebook::react

ReactCommon/react/renderer/uimanager/UIManagerBinding.cpp

@@ -13,8 +13,7 @@
 #include <react/renderer/core/LayoutableShadowNode.h>
 #include <react/renderer/debug/SystraceSection.h>
 
-namespace facebook {
-namespace react {
+namespace facebook::react {
 
 static jsi::Value getModule(
     jsi::Runtime &runtime,
@@ -753,5 +752,4 @@ jsi::Value UIManagerBinding::get(
   return jsi::Value::undefined();
 }
 
-} // namespace react
-} // namespace facebook
+} // namespace facebook::react

ReactCommon/react/renderer/uimanager/UIManagerBinding.h

@@ -13,8 +13,7 @@
 #include <react/renderer/uimanager/UIManager.h>
 #include <react/renderer/uimanager/primitives.h>
 
-namespace facebook {
-namespace react {
+namespace facebook::react {
 
 /*
  * Exposes UIManager to JavaScript realm.
@@ -91,5 +90,4 @@ class UIManagerBinding : public jsi::HostObject {
   std::unique_ptr<EventHandler const> eventHandler_;
 };
 
-} // namespace react
-} // namespace facebook
+} // namespace facebook::react

ReactCommon/react/renderer/uimanager/UIManagerCommitHook.h

@@ -9,8 +9,7 @@
 
 #include <react/renderer/components/root/RootShadowNode.h>
 
-namespace facebook {
-namespace react {
+namespace facebook::react {
 
 class ShadowTree;
 class UIManager;
@@ -41,5 +40,4 @@ class UIManagerCommitHook {
   virtual ~UIManagerCommitHook() noexcept = default;
 };
 
-} // namespace react
-} // namespace facebook
+} // namespace facebook::react

ReactCommon/react/renderer/uimanager/UIManagerDelegate.h

@@ -11,8 +11,7 @@
 #include <react/renderer/core/ShadowNode.h>
 #include <react/renderer/mounting/MountingCoordinator.h>
 
-namespace facebook {
-namespace react {
+namespace facebook::react {
 
 /*
  * Abstract class for UIManager's delegate.
@@ -62,5 +61,4 @@ class UIManagerDelegate {
   virtual ~UIManagerDelegate() noexcept = default;
 };
 
-} // namespace react
-} // namespace facebook
+} // namespace facebook::react

ReactCommon/react/renderer/uimanager/primitives.h

@@ -14,8 +14,7 @@
 #include <react/renderer/core/EventHandler.h>
 #include <react/renderer/core/ShadowNode.h>
 
-namespace facebook {
-namespace react {
+namespace facebook::react {
 
 using BackgroundExecutor =
     std::function<void(std::function<void()> &&callback)>;
@@ -137,5 +136,4 @@ inline static folly::dynamic commandArgsFromValue(
   return jsi::dynamicFromValue(runtime, value);
 }
 
-} // namespace react
-} // namespace facebook
+} // namespace facebook::react