[PPAPI] Add browser tests for compositor API

content/renderer/pepper/pepper_plugin_instance_impl.cc

Index: content/renderer/pepper/pepper_plugin_instance_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.cc b/content/renderer/pepper/pepper_plugin_instance_impl.cc
index 7db4c547f56e735fe96e414d3463288cf7ad641c..7bba781874049780dee953ae4adb7646dbc0dcfa 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.cc
@@ -1846,7 +1846,7 @@ void PepperPluginInstanceImpl::UpdateFlashFullscreenState(
     return;
   }
 
-  UpdateLayer();
+  UpdateLayer(false);
 
   bool old_plugin_focus = PluginHasFocus();
   flash_fullscreen_ = flash_fullscreen;
@@ -1985,7 +1985,7 @@ bool PepperPluginInstanceImpl::PrintPDFOutput(PP_Resource print_output,
 #endif
 }
 
-void PepperPluginInstanceImpl::UpdateLayer() {
+void PepperPluginInstanceImpl::UpdateLayer(bool device_changed) {
   if (!container_)
     return;
 
@@ -2000,7 +2000,8 @@ void PepperPluginInstanceImpl::UpdateLayer() {
   bool want_texture_layer = want_3d_layer || want_2d_layer;
   bool want_compositor_layer = !!bound_compositor_;
 
-  if ((want_texture_layer == !!texture_layer_.get()) &&
+  if (!device_changed &&
+      (want_texture_layer == !!texture_layer_.get()) &&
       (want_3d_layer == layer_is_hardware_) &&
       (want_compositor_layer == !!compositor_layer_) &&
       layer_bound_to_fullscreen_ == !!fullscreen_container_) {
@@ -2043,6 +2044,7 @@ void PepperPluginInstanceImpl::UpdateLayer() {
   } else if (want_compositor_layer) {
     compositor_layer_ = bound_compositor_->layer();
     web_layer_.reset(new webkit::WebLayerImpl(compositor_layer_));
+    web_layer_.reset(new webkit::WebLayerImpl(compositor_layer_));
   }
 
   if (web_layer_) {
@@ -2241,7 +2243,7 @@ PP_Bool PepperPluginInstanceImpl::BindGraphics(PP_Instance instance,
 
   // Special-case clearing the current device.
   if (!device) {
-    UpdateLayer();
+    UpdateLayer(true);
     InvalidateRect(gfx::Rect());
     return PP_TRUE;
   }
@@ -2277,13 +2279,13 @@ PP_Bool PepperPluginInstanceImpl::BindGraphics(PP_Instance instance,
   if (compositor) {
     if (compositor->BindToInstance(this)) {
       bound_compositor_ = compositor;
-      UpdateLayer();
+      UpdateLayer(true);
       return PP_TRUE;
     }
   } else if (graphics_2d) {
     if (graphics_2d->BindToInstance(this)) {
       bound_graphics_2d_platform_ = graphics_2d;
-      UpdateLayer();
+      UpdateLayer(true);
       return PP_TRUE;
     }
   } else if (graphics_3d) {
@@ -2292,7 +2294,7 @@ PP_Bool PepperPluginInstanceImpl::BindGraphics(PP_Instance instance,
     if (graphics_3d->pp_instance() == pp_instance() &&
         graphics_3d->BindToInstance(true)) {
       bound_graphics_3d_ = graphics_3d;
-      UpdateLayer();
+      UpdateLayer(true);
       return PP_TRUE;
     }
   }
@@ -3063,7 +3065,7 @@ bool PepperPluginInstanceImpl::FlashSetFullscreen(bool fullscreen,
     DCHECK(!fullscreen_container_);
     fullscreen_container_ =
         render_frame_->CreatePepperFullscreenContainer(this);
-    UpdateLayer();
+    UpdateLayer(false);
   } else {
     DCHECK(fullscreen_container_);
     fullscreen_container_->Destroy();