Strip comments from shader before checking for invalid characters

gpu/command_buffer/service/shader_manager.h

Index: gpu/command_buffer/service/shader_manager.h
diff --git a/gpu/command_buffer/service/shader_manager.h b/gpu/command_buffer/service/shader_manager.h
index 41681524f38516dfa36175a0775e519ff16662a8..c8f2b56912717f34d862f8e4f83cfec36c070536 100644
--- a/gpu/command_buffer/service/shader_manager.h
+++ b/gpu/command_buffer/service/shader_manager.h
@@ -150,6 +150,9 @@ class ShaderManager {
   // Check if a ShaderInfo is owned by this ShaderManager.
   bool IsOwned(ShaderInfo* info);
 
+  // Strips the comments from a shader.
+  static std::string StripComments(const std::string source);
+
  private:
   // Info for each shader by service side shader Id.
   typedef base::hash_map<GLuint, ShaderInfo::Ref> ShaderInfoMap;