Re-land: content: Single process support for native GpuMemoryBuffers.

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index 17c6ebedb1ff5c38473b8ce8f60fdef1305d5d12..afec0a5e79fb9987ce0c66413d180c79bd63099f 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -79,12 +79,20 @@
 #endif
 
 #if defined(OS_ANDROID)
+#include <android/native_window.h>
+#include <android/native_window_jni.h>
+
 #include "base/android/jni_android.h"
+#include "base/containers/scoped_ptr_hash_map.h"
+#include "base/synchronization/lock.h"
 #include "content/browser/android/browser_startup_controller.h"
 #include "content/browser/android/browser_surface_texture_manager.h"
 #include "content/browser/android/tracing_controller_android.h"
 #include "content/browser/screen_orientation/screen_orientation_delegate_android.h"
+#include "content/common/android/surface_texture_manager.h"
 #include "content/public/browser/screen_orientation_provider.h"
+#include "ui/gl/android/scoped_java_surface.h"
+#include "ui/gl/android/surface_texture.h"
 #include "ui/gl/gl_surface.h"
 #endif
 
@@ -149,6 +157,48 @@
 namespace content {
 namespace {
 
+#if defined(OS_ANDROID)

[Daniele Castagna, 2015/05/06 18:39:41]

Could this class be somewhere else?

[reveman, 2015/05/06 20:37:47]

I'm Ok with leaving it here or moving it somewhere else as long as we can be
consistent with how we handle things on MacOSX and upcoming IOSurfaceManager
changes.

+class InProcessSurfaceTextureManager : public SurfaceTextureManager {
+ public:
+  InProcessSurfaceTextureManager() {}
+
+  // Overridden from SurfaceTextureManager:
+  void RegisterSurfaceTexture(int surface_texture_id,
+                              int client_id,
+                              gfx::SurfaceTexture* surface_texture) override {
+    base::AutoLock lock(lock_);
+    DCHECK(surfaces_.find(surface_texture_id) == surfaces_.end());
+    surfaces_.set(surface_texture_id,
+                  make_scoped_ptr(new gfx::ScopedJavaSurface(surface_texture)));
+  }
+  void UnregisterSurfaceTexture(int surface_texture_id,
+                                int client_id) override {
+    base::AutoLock lock(lock_);
+    DCHECK(surfaces_.find(surface_texture_id) != surfaces_.end());
+    surfaces_.erase(surface_texture_id);
+  }
+  gfx::AcceleratedWidget AcquireNativeWidgetForSurfaceTexture(
+      int surface_texture_id) override {
+    base::AutoLock lock(lock_);
+    DCHECK(surfaces_.find(surface_texture_id) != surfaces_.end());
+    JNIEnv* env = base::android::AttachCurrentThread();
+    return ANativeWindow_fromSurface(
+        env, surfaces_.get(surface_texture_id)->j_surface().obj());
+  }
+
+ private:
+  typedef base::ScopedPtrHashMap<int, scoped_ptr<gfx::ScopedJavaSurface>>

[Daniele Castagna, 2015/05/06 18:39:41]

Is there something like a ConcurrentMap so you can avoid to explicitly use a
lock?

[reveman, 2015/05/06 20:37:47]

Not that I know.

+      SurfaceMap;
+  SurfaceMap surfaces_;
+  base::Lock lock_;
+
+  DISALLOW_COPY_AND_ASSIGN(InProcessSurfaceTextureManager);
+};
+
+base::LazyInstance<InProcessSurfaceTextureManager>
+    g_in_process_surface_texture_manager = LAZY_INSTANCE_INITIALIZER;
+#endif
+
 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
 void SetupSandbox(const base::CommandLine& parsed_command_line) {
   TRACE_EVENT0("startup", "SetupSandbox");
@@ -564,7 +614,14 @@ void BrowserMainLoop::MainMessageLoopStart() {
 #if defined(OS_ANDROID)
   {
     TRACE_EVENT0("startup", "BrowserMainLoop::Subsystem:SurfaceTextureManager");
-    SurfaceTextureManager::InitInstance(new BrowserSurfaceTextureManager);
+    browser_surface_texture_manager_.reset(new BrowserSurfaceTextureManager);
+  }
+
+  if (parsed_command_line_.HasSwitch(switches::kSingleProcess)) {

[Daniele Castagna, 2015/05/06 18:39:41]

This shouldn't be true on any real platform, right?

[reveman, 2015/05/06 20:37:47]

It's always the true on Android Webview and it will of course be true on all
other platform if you pass --single-process flag to chrome.

+    SurfaceTextureManager::InitInstance(
+        g_in_process_surface_texture_manager.Pointer());
+  } else {
+    SurfaceTextureManager::InitInstance(browser_surface_texture_manager_.get());
   }
 
   if (!parsed_command_line_.HasSwitch(