Send message to renderer on command buffer error

If there's a command buffer error, no more swap buffers callbacks will be sent, which could cause the renderer to hang forever. Prevent that by sending a message to the renderer, which will invoke the lost context callback.

BUG=
TEST=

Review URL: http://codereview.chromium.org/7024011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@88097 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 9 insertions, 0 deletions

diff --git a/gpu/command_buffer/service/command_buffer_service.cc b/gpu/command_buffer/service/command_buffer_service.cc
index bc36fa3..b042a23 100644
--- a/gpu/command_buffer/service/command_buffer_service.cc
+++ b/gpu/command_buffer/service/command_buffer_service.cc
@@ -249,6 +249,8 @@ void CommandBufferService::SetToken(int32 token) {
 void CommandBufferService::SetParseError(error::Error error) {
   if (error_ == error::kNoError) {
     error_ = error;
+    if (parse_error_callback_.get())
+      parse_error_callback_->Run();
   }
 }
 
@@ -257,4 +259,9 @@ void CommandBufferService::SetPutOffsetChangeCallback(
   put_offset_change_callback_.reset(callback);
 }
 
+void CommandBufferService::SetParseErrorCallback(
+    Callback0::Type* callback) {
+  parse_error_callback_.reset(callback);
+}
+
 }  // namespace gpu
diff --git a/gpu/command_buffer/service/command_buffer_service.h b/gpu/command_buffer/service/command_buffer_service.h
index f8d3744..cffef5f 100644
--- a/gpu/command_buffer/service/command_buffer_service.h
+++ b/gpu/command_buffer/service/command_buffer_service.h
@@ -50,6 +50,7 @@ class CommandBufferService : public CommandBuffer {
   // attempting to write more to the command buffer. Takes ownership of
   // callback.
   virtual void SetPutOffsetChangeCallback(Callback1<bool>::Type* callback);
+  virtual void SetParseErrorCallback(Callback0::Type* callback);
 
  private:
   Buffer ring_buffer_;
@@ -57,6 +58,7 @@ class CommandBufferService : public CommandBuffer {
   int32 get_offset_;
   int32 put_offset_;
   scoped_ptr<Callback1<bool>::Type> put_offset_change_callback_;
+  scoped_ptr<Callback0::Type> parse_error_callback_;
   std::vector<Buffer> registered_objects_;
   std::set<int32> unused_registered_object_elements_;
   int32 token_;