Explicitly disable all attribs before drawing in CopyTextureCHROMIUM

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 bc87b967863c8ab49f0b9fae775a623c33ce7d41..a8a7c1c7c929be65c9115b2d3af2eff5773937cf 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -566,6 +566,9 @@ class GLES2DecoderImpl : public GLES2Decoder,
   virtual void RestoreFramebufferBindings() const OVERRIDE;
   virtual void RestoreTextureState(unsigned service_id) const OVERRIDE;
 
+  virtual void ClearAllAttributes() const OVERRIDE;
+  virtual void RestoreAllAttributes() const OVERRIDE;
+
   virtual QueryManager* GetQueryManager() OVERRIDE {
     return query_manager_.get();
   }
@@ -3784,6 +3787,20 @@ void GLES2DecoderImpl::RestoreTextureState(unsigned service_id) const {
   }
 }
 
+void GLES2DecoderImpl::ClearAllAttributes() const {
+  for (uint32 i = 0; i < group_->max_vertex_attribs(); ++i) {
+    if (i != 0) // Never disable attribute 0
+      glDisableVertexAttribArray(i);
+    if(features().angle_instanced_arrays)
+      glVertexAttribDivisorANGLE(i, 0);
+  }
+}
+
+void GLES2DecoderImpl::RestoreAllAttributes() const {
+  for (uint32 i = 0; i < group_->max_vertex_attribs(); ++i)
+    RestoreAttribute(i);
+}
+
 void GLES2DecoderImpl::OnFboChanged() const {
   if (workarounds().restore_scissor_on_fbo_change)
     state_.fbo_binding_for_scissor_workaround_dirty_ = true;