Drop frontbuffers with ui-use-gpu-process, synchronized with browser, decoupled from backbuffer dro…

content/common/gpu/image_transport_surface_linux.cc

 // Copyright (c) 2012 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 "content/common/gpu/image_transport_surface.h"
 
 // This conflicts with the defines in Xlib.h and must come first.
 #include "content/common/gpu/gpu_messages.h"
 
 #include <X11/Xlib.h>
@@ skipping 85 matching lines @@
   virtual void SetBackbufferAllocation(bool allocated) OVERRIDE;
   virtual void SetFrontbufferAllocation(bool allocated) OVERRIDE;
 
  protected:
   // ImageTransportSurface implementation
   virtual void OnNewSurfaceACK(
       uint64 surface_handle, TransportDIB::Handle shm_handle) OVERRIDE;
   virtual void OnBuffersSwappedACK() OVERRIDE;
   virtual void OnPostSubBufferACK() OVERRIDE;
   virtual void OnResizeViewACK() OVERRIDE;
+  virtual void OnSetFrontSurfaceIsProtected(bool is_protected) OVERRIDE;
   virtual void OnResize(gfx::Size size) OVERRIDE;
 
  private:
   virtual ~EGLImageTransportSurface() OVERRIDE;
   void ReleaseSurface(scoped_refptr<EGLAcceleratedSurface>* surface);
   void SendBuffersSwapped();
   void SendPostSubBuffer(int x, int y, int width, int height);
 
   // Tracks the current buffer allocation state.
   bool backbuffer_suggested_allocation_;
@@ skipping 37 matching lines @@
   virtual void SetBackbufferAllocation(bool allocated) OVERRIDE;
   virtual void SetFrontbufferAllocation(bool allocated) OVERRIDE;
 
  protected:
   // ImageTransportSurface implementation:
   virtual void OnNewSurfaceACK(
       uint64 surface_handle, TransportDIB::Handle shm_handle) OVERRIDE;
   virtual void OnBuffersSwappedACK() OVERRIDE;
   virtual void OnPostSubBufferACK() OVERRIDE;
   virtual void OnResizeViewACK() OVERRIDE;
+  virtual void OnSetFrontSurfaceIsProtected(bool is_protected) OVERRIDE;
   virtual void OnResize(gfx::Size size) OVERRIDE;
 
  private:
   virtual ~GLXImageTransportSurface();
 
   // Tell the browser to release the surface.
   void ReleaseSurface();
 
   void SendBuffersSwapped();
   void SendPostSubBuffer(int x, int y, int width, int height);
@@ skipping 39 matching lines @@
   virtual std::string GetExtensions() OVERRIDE;
   virtual gfx::Size GetSize() OVERRIDE;
 
  protected:
   // ImageTransportSurface implementation:
   virtual void OnNewSurfaceACK(
       uint64 surface_handle, TransportDIB::Handle shm_handle) OVERRIDE;
   virtual void OnBuffersSwappedACK() OVERRIDE;
   virtual void OnPostSubBufferACK() OVERRIDE;
   virtual void OnResizeViewACK() OVERRIDE;
+  virtual void OnSetFrontSurfaceIsProtected(bool is_protected) OVERRIDE;
   virtual void OnResize(gfx::Size size) OVERRIDE;
 
  private:
   virtual ~OSMesaImageTransportSurface();
 
   // Tell the browser to release the surface.
   void ReleaseSurface();
 
   scoped_ptr<TransportDIB> shared_mem_;
   uint32 shared_id_;
@@ skipping 280 matching lines @@
 gfx::Size EGLImageTransportSurface::GetSize() {
   return back_surface_->size();
 }
 
 void EGLImageTransportSurface::OnNewSurfaceACK(
     uint64 surface_handle, TransportDIB::Handle /*shm_handle*/) {
   DCHECK_EQ(back_surface_->pixmap(), surface_handle);
   helper_->SetScheduled(true);
 }
 
+void EGLImageTransportSurface::OnSetFrontSurfaceIsProtected(
+    bool is_protected) {
+}
+
 void EGLImageTransportSurface::OnBuffersSwappedACK() {
   helper_->SetScheduled(true);
 }
 
 void EGLImageTransportSurface::OnPostSubBufferACK() {
   helper_->SetScheduled(true);
 }
 
 void EGLImageTransportSurface::OnResizeViewACK() {
   NOTREACHED();
@@ skipping 221 matching lines @@
   context->SetSwapInterval(0);
 
   made_current_ = true;
   return true;
 }
 
 void GLXImageTransportSurface::OnNewSurfaceACK(
     uint64 surface_handle, TransportDIB::Handle /*shm_handle*/) {
 }
 
+void GLXImageTransportSurface::OnSetFrontSurfaceIsProtected(
+    bool is_protected) {
+}
+
 void GLXImageTransportSurface::OnBuffersSwappedACK() {
   helper_->SetScheduled(true);
 }
 
 void GLXImageTransportSurface::OnPostSubBufferACK() {
   helper_->SetScheduled(true);
 }
 
 void GLXImageTransportSurface::OnResizeViewACK() {
   NOTREACHED();
@@ skipping 66 matching lines @@
 
 void OSMesaImageTransportSurface::OnNewSurfaceACK(
     uint64 surface_handle, TransportDIB::Handle shm_handle) {
   shared_id_ = surface_handle;
   shared_mem_.reset(TransportDIB::Map(shm_handle));
   DCHECK_NE(shared_mem_.get(), static_cast<void*>(NULL));
 
   helper_->SetScheduled(true);
 }
 
+void OSMesaImageTransportSurface::OnSetFrontSurfaceIsProtected(
+    bool is_protected) {
+}
+
 void OSMesaImageTransportSurface::OnResizeViewACK() {
   NOTREACHED();
 }
 
 bool OSMesaImageTransportSurface::SwapBuffers() {
   DCHECK_NE(shared_mem_.get(), static_cast<void*>(NULL));
 
   // Copy the OSMesa buffer to the shared memory
   glFinish();
   memcpy(shared_mem_->memory(), GetHandle(), size_.GetArea() * 4);
@@ skipping 91 matching lines @@
                                                    stub,
                                                    surface.get(),
                                                    handle.transport);
   }
 
   if (surface->Initialize())
     return surface;
   else
     return NULL;
 }