Fix crash when rotating screen after resume

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 0886768193444d6e61c7467c5ef30e28aeaf85a6..2064c24df6603920909e2619f1a857f07b3a4b9f 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -3628,6 +3628,13 @@ void GLES2DecoderImpl::Destroy(bool have_context) {
 
   DCHECK(!have_context || context_->IsCurrent(NULL));
 
+  if (vertex_array_manager_ .get()) {
+    // Destroy needs to be called before the VertexAttribManagers are destoryed

[jamesr, 2015/04/30 00:11:21]

s/destoryed/destroyed/

[etiennej, 2015/04/30 12:27:08]

Done.

+    // so that they know the context is no longer available and do not attempts
+    // to call gl* functions.
+    vertex_array_manager_->Destroy(have_context);
+  }
+
   // Unbind everything.
   state_.vertex_attrib_manager = NULL;
   state_.default_vertex_attrib_manager = NULL;
@@ -3727,7 +3734,6 @@ void GLES2DecoderImpl::Destroy(bool have_context) {
   }
 
   if (vertex_array_manager_ .get()) {
-    vertex_array_manager_->Destroy(have_context);
     vertex_array_manager_.reset();
   }
 
@@ -3952,7 +3958,6 @@ error::Error GLES2DecoderImpl::HandleResizeCHROMIUM(uint32 immediate_data_size,
 
   if (!resize_callback_.is_null()) {
     resize_callback_.Run(gfx::Size(width, height), scale_factor);
-    DCHECK(context_->IsCurrent(surface_.get()));
     if (!context_->IsCurrent(surface_.get())) {
       LOG(ERROR) << "GLES2DecoderImpl: Context lost because context no longer "
                  << "current after resize callback.";