Reland^2: Use "gfxstream" namespace

This reverts commit d37d7c8c0cdf6b84d453cb41e358094880a8f3b5.

Reland adds in aosp/2516595 which was only built on the "full"
target and removes namespace around window methods to satisfy
MacOS build.

Bug: b/271464937
Test: android build
Test: cmake build
Test: ATP MacOS build
Change-Id: Ida36ac16f9c3b98aedd744d21c9b27e9063a8eea

stream-servers/RenderThread.cpp

diff --git a/stream-servers/RenderThread.cpp b/stream-servers/RenderThread.cpp
index b9b93db..c90a382 100644
--- a/stream-servers/RenderThread.cpp
+++ b/stream-servers/RenderThread.cpp
@@ -46,11 +46,13 @@
 
 #include <unordered_map>
 
+namespace gfxstream {
+
 using android::base::AutoLock;
 using android::base::EventHangMetadata;
 using android::base::MessageChannel;
-
-namespace emugl {
+using emugl::GfxApiLogger;
+using vk::VkDecoderContext;
 
 struct RenderThread::SnapshotObjects {
     RenderThreadInfo* threadInfo;
@@ -292,7 +294,7 @@
     // Framebuffer initialization is asynchronous, so we need to make sure
     // it's completely initialized before running any GL commands.
     FrameBuffer::waitUntilInitialized();
-    if (goldfish_vk::getGlobalVkEmulation()) {
+    if (vk::getGlobalVkEmulation()) {
         tInfo.m_vkInfo.emplace();
     }
 
@@ -568,4 +570,4 @@
     return 0;
 }
 
-}  // namespace emugl
+}  // namespace gfxstream