Free the resources used by a context group.

gpu/command_buffer/service/context_group.cc

Index: gpu/command_buffer/service/context_group.cc
===================================================================
--- gpu/command_buffer/service/context_group.cc	(revision 51426)
+++ gpu/command_buffer/service/context_group.cc	(working copy)
@@ -26,6 +26,13 @@
 }
 
 ContextGroup::~ContextGroup() {
+  // Check that Destroy has been called.
+  DCHECK(buffer_manager_ == NULL);
+  DCHECK(framebuffer_manager_ == NULL);
+  DCHECK(renderbuffer_manager_ == NULL);
+  DCHECK(texture_manager_ == NULL);
+  DCHECK(program_manager_ == NULL);
+  DCHECK(shader_manager_ == NULL);
 }
 
 static void GetIntegerv(GLenum pname, uint32* var) {
@@ -87,6 +94,38 @@
   return true;
 }
 
+void ContextGroup::Destroy(bool have_context) {
+  if (buffer_manager_ != NULL) {
+    buffer_manager_->Destroy(have_context);
+    buffer_manager_.reset();
+  }
+
+  if (framebuffer_manager_ != NULL) {
+    framebuffer_manager_->Destroy(have_context);
+    framebuffer_manager_.reset();
+  }
+
+  if (renderbuffer_manager_ != NULL) {
+    renderbuffer_manager_->Destroy(have_context);
+    renderbuffer_manager_.reset();
+  }
+
+  if (texture_manager_ != NULL) {
+    texture_manager_->Destroy(have_context);
+    texture_manager_.reset();
+  }
+
+  if (program_manager_ != NULL) {
+    program_manager_->Destroy(have_context);
+    program_manager_.reset();
+  }
+
+  if (shader_manager_ != NULL) {
+    shader_manager_->Destroy(have_context);
+    shader_manager_.reset();
+  }
+}
+
 IdAllocator* ContextGroup::GetIdAllocator(unsigned namespace_id) {
   IdAllocatorMap::iterator it = id_namespaces_.find(namespace_id);
   if (it != id_namespaces_.end()) {