WebGL 2: make sure VertexAttrib type match the corresponding attrib type in shader

gpu/command_buffer/service/program_manager.h

Index: gpu/command_buffer/service/program_manager.h
diff --git a/gpu/command_buffer/service/program_manager.h b/gpu/command_buffer/service/program_manager.h
index 8b9d62f150ff3d3c9c6c6b7723a3504af4dffb28..b7a89dbfd2d8a795046f5738ad659c3a8b048870 100644
--- a/gpu/command_buffer/service/program_manager.h
+++ b/gpu/command_buffer/service/program_manager.h
@@ -403,6 +403,14 @@ class GPU_EXPORT Program : public base::RefCounted<Program> {
       return fragment_output_written_mask_;
   }
 
+  // The data are only valid after a successful link.
+  uint32_t vertex_input_type_mask() const {
+      return vertex_input_type_mask_;
+  }
+  uint32_t vertex_input_written_mask() const {
+      return vertex_input_written_mask_;
+  }
+
   // Update uniform block binding after a successful glUniformBlockBinding().
   void SetUniformBlockBinding(GLuint index, GLuint binding);
 
@@ -447,6 +455,7 @@ class GPU_EXPORT Program : public base::RefCounted<Program> {
   void UpdateFragmentInputs();
   void UpdateProgramOutputs();
   void UpdateFragmentOutputBaseTypes();
+  void UpdateVertexInputBaseTypes();
   void UpdateUniformBlockSizeInfo();
 
   // Process the program log, replacing the hashed names with original names.
@@ -565,6 +574,13 @@ class GPU_EXPORT Program : public base::RefCounted<Program> {
   // Same layout as above, 2 bits per location, 0x03 if a location is occupied
   // by an output variable, 0x00 if not.
   uint32_t fragment_output_written_mask_;
+
+  // Vertex input variable base types: FLOAT, INT, or UINT.
+  // We have up to 16 inputs, each is encoded into 2 bits, total 32 bits
+  uint32_t vertex_input_type_mask_;
+  // Same layout as above, 2 bits per location, 0x03 if a location is occupied
+  // by an input variable, 0x00 if not.
+  uint32_t vertex_input_written_mask_;
 };
 
 // Tracks the Programs.