GPU: Reduce MakeCurrent calls to fix Orange San Diego

gpu/command_buffer/service/feature_info.cc

Index: gpu/command_buffer/service/feature_info.cc
diff --git a/gpu/command_buffer/service/feature_info.cc b/gpu/command_buffer/service/feature_info.cc
index 0c1813916f9b40cb55941997f73df8b751ae851e..d70b6f18ad60d6d51f6e9686edb0ff26c84f3cbc 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -227,7 +227,7 @@ void FeatureInfo::AddFeatures(const CommandLine& command_line) {
       workarounds_.flush_on_context_switch = true;
       workarounds_.delete_instead_of_resize_fbo = true;
     }
-    if (is_vivante) {
+    if (is_vivante || is_imagination) {
       workarounds_.unbind_fbo_on_context_switch = true;
     }
 #if defined(OS_MACOSX)